<wbr id="0p4dr"><legend id="0p4dr"></legend></wbr>
  • <wbr id="0p4dr"></wbr>

  • <sub id="0p4dr"><listing id="0p4dr"></listing></sub>
    <form id="0p4dr"><span id="0p4dr"><track id="0p4dr"></track></span></form>

    <sub id="0p4dr"></sub>
    <form id="0p4dr"></form>
      • 快速報價系列TOGNELLA流量控制閥FT 1254/5-01工作方式
        發布者:山東賽力特自動化設備有限公司  發布時間:2024-02-23 10:34:43  訪問次數:96

        快速報價系列TOGNELLA流量控制閥FT 1254/5-01工作方式
        快速報價系列TOGNELLA流量控制閥FT 1254/5-01工作方式
        為了成功實現過程的自動化,重要的是要確保閥門自身能夠滿足過程及管道內介質的特殊要求。通常生產過程和工藝介質能夠決定閥門的種類,閥芯的類型以及閥門的內件和閥門的結構和材料。閥門選擇好后接下來就要考慮自動化的要求也就是執行機構的選擇?梢院唵蔚陌磧煞N基本閥門操作類型來考慮執行機構。旋轉式閥門(單回轉式閥門)這類閥門包括:旋塞閥、球閥、蝶閥以及風門或擋板。這類閥門需要已要求的力矩進行9度旋轉操作的執行機構2.多回轉式閥門這類閥門可以是非旋轉提升式閥桿或旋轉非提升式桿,或者說是他們需要多轉操作去驅動閥門到開或關的位置。

         SESINO冷卻器APL 170
        SESINO冷卻器APL 240
        SESINO冷卻器APL 263
        SESINO冷卻器APL 300
        SESINO冷卻器APL 300/2
        SESINO冷卻器APL 430
        SESINO冷卻器APL 430/2
        SESINO冷卻器APL 494
        SESINO冷卻器APL 580
        SESINO冷卻器APL 2/463
        SESINO冷卻器APL 2/494
        SESINO冷卻器APL 2/580
        SESINO冷卻器ELRO/91261
        SESINO冷卻器AP 178
        SESINO冷卻器AP 260
        SESINO冷卻器AP 300 E
        SESINO冷卻器AP 300/2 E
        SESINO冷卻器AP 430 E
        SESINO冷卻器AP 430/2 E
        SESINO冷卻器AP 494 EB
        SESINO冷卻器AP 580 EB
        SESINO冷卻器AP 680 EB
        SESINO冷卻器AP 730 EB
        SESINO冷卻器AP 830 EB
        SESINO冷卻器AP 2/680 EB
        SESINO冷卻器AP 2/730 EB
        SESINO冷卻器AP 2/830 EB
        SESINO冷卻器AP 3/830 EB
        SESINO冷卻器AP 1200 EB
        SESINO冷卻器AP 300 I
        SESINO冷卻器AP 300/2 I
        SESINO冷卻器AP 430 I
        SESINO冷卻器AP 430/2 I
        SESINO冷卻器AP 494 I
        SESINO冷卻器AP 580 I
        SESINO冷卻器AP 680 I
        SESINO冷卻器AP 730 I
        SESINO冷卻器AP 830 I
        SESINO冷卻器AP 2/680 I
        SESINO冷卻器AP 2/730 I
        SESINO冷卻器AP 2/830 I
        SESINO冷卻器RAS 1000
        SESINO冷卻器RAS 3000
        SESINO冷卻器RAS 5000
        SESINO冷卻器RAS 7000
        SESINO冷卻器AP 300 EMX
        SESINO冷卻器AP 300/2 EMX
        SESINO冷卻器AP 430 EMX
        SESINO冷卻器AP 430/2 EMX
        SESINO冷卻器AP 494 EMX
        SESINO冷卻器AP 580 EMX
        SESINO冷卻器AP 680 EMX
        SESINO冷卻器AP 730 EMX
        SESINO冷卻器AP 830 EMX
        SESINO冷卻器AP 2/680 EMX
        SESINO冷卻器AP 2/730 EMX
        SESINO冷卻器AP 2/830 EMX
        SESINO冷卻器AP 3/830 EMX
        SESINO冷卻器AP 300 EM
        SESINO冷卻器AP 300/2 EM
        SESINO冷卻器AP 430 EM
        SESINO冷卻器AP 430/2 EM
        SESINO冷卻器AP 494 EM
        SESINO冷卻器AP 580 EM
        SESINO冷卻器AP 680 EM
        SESINO冷卻器AP 730 EM
        SESINO冷卻器AP 830 EM
        SESINO冷卻器AP 2/680 EM
        SESINO冷卻器AP 2/730 EM
        SESINO冷卻器AP 2/830 EM
        SESINO冷卻器AP 3/830 EM
        SESINO冷卻器Serie MS 84 P
        SESINO冷卻器Serie MS 84 P
        SESINO冷卻器Serie MS 134 P
        SESINO冷卻器MS 84 CF1 2SC84CF1
        SESINO冷卻器MS 84 CF2 2SC84CF2
        SESINO冷卻器MS 84 CF3 2SC84CF3
        SESINO冷卻器MS 84 CF4 2SC84CF4
        SESINO冷卻器MS 84 CF5 2SC84CF5
        SESINO冷卻器MS 84 CF6 2SC84CF6
        SESINO冷卻器MS 134 CF2 2SC134CF2
        SESINO冷卻器MS 134 CF3 2SC134CF3
        SESINO冷卻器MS 134 CF4 2SC134CF4
        SESINO冷卻器MS 134 CF5 2SC134CF5
        SESINO冷卻器MS 134 CF7 2SC134CF7
        SESINO冷卻器T60 CB1 2SC60CB1
        SESINO冷卻器T60 CB2 2SC60CB2
        SESINO冷卻器T60 CB3 2SC60CB3
        SESINO冷卻器T80 CB1 2SC80CB1
        SESINO冷卻器T80 CB2 2SC80CB2
        SESINO冷卻器T80 CB3 2SC80CB3
        SESINO冷卻器T60 CF2 2SC60CF2
        SESINO冷卻器MS 152/7 P1 2SC152/7P1
        SESINO冷卻器MS 152/7 P2 2SC152/7P2
        SESINO冷卻器MS 152/7 P3 2SC152/7P3
        SESINO冷卻器MS 152/7 P4 2SC152/7P4
        SESINO冷卻器MS 152/7 P5 2SC152/7P5
        SESINO冷卻器MS 152/7 P6 2SC152/7P6
        SESINO冷卻器MS 152/7 P7 2SC152/7P7
        SESINO冷卻器MS 152/7 P8 2SC152/7P8
        SESINO冷卻器MS 152/7 P9 2SC152/7P9
        SESINO冷卻器MS 152/10 P1 2SC152/10P1
        SESINO冷卻器MS 152/10 P2 2SC152/10P2
        SESINO冷卻器MS 152/10 P3 2SC152/10P3
        SESINO冷卻器MS 152/10 P4 2SC152/10P4
        SESINO冷卻器MS 152/10 P5 2SC152/10P5
        SESINO冷卻器MS 152/10 P6 2SC152/10P6
        SESINO冷卻器MS 152/10 P7 2SC152/10P7
        SESINO冷卻器MS 152/10 P8 2SC152/10P8
        SESINO冷卻器MS 152/10 P9 2SC152/10P9
        SESINO冷卻器MS 172/7 P1 2SC172/7P1
        SESINO冷卻器MS 172/7 P2 2SC172/7P2
        SESINO冷卻器MS 172/7 P3 2SC172/7P3
        SESINO冷卻器MS 172/7 P4 2SC172/7P4
        SESINO冷卻器MS 172/7 P5 2SC172/7P5
        SESINO冷卻器MS 172/7 P6 2SC172/7P6
        SESINO冷卻器MS 172/7 P7 2SC172/7P7
        SESINO冷卻器MS 202 P1 2SC202P1
        SESINO冷卻器MS 202 P2 2SC202P2
        SESINO冷卻器MS 202 P3 2SC202P3
        SESINO冷卻器MS 202 P4 2SC202P4
        SESINO冷卻器MS 202 P5 2SC202P5
        SESINO冷卻器MS 202 P6 2SC202P6
        SESINO冷卻器MS 202 P7 2SC202P7
        SESINO冷卻器MS 202 P8 2SC202P8
        SESINO冷卻器MS 202 P9 2SC202P9
        SESINO冷卻器MS 202 P10 2SC202P10
        SESINO冷卻器MS 272 P1 2SC272P1
        SESINO冷卻器MS 272 P2 2SC272P2
        SESINO冷卻器MS 272 P3 2SC272P3
        SESINO冷卻器MS 272 P4 2SC272P4
        SESINO冷卻器MS 272 P5 2SC272P5
        SESINO冷卻器MS 272 P6 2SC272P6
        SESINO冷卻器MS 272 P7 2SC272P7
        SESINO冷卻器MS 352 P1 2SC352P1
        SESINO冷卻器MS 352 P2 2SC352P2
        SESINO冷卻器MS 352 P3 2SC352P3
        SESINO冷卻器MS 352 P4 2SC352P4
        SESINO冷卻器MS 352 P5 2SC352P5
        SESINO冷卻器M18-10
        SESINO冷卻器M18-20
        SESINO冷卻器M18-30
        SESINO冷卻器M18-40
        SESINO冷卻器M18-50
        SESINO冷卻器M25-30
        SESINO冷卻器M25-40
        SESINO冷卻器M25-50
        SESINO冷卻器M25-60
        SESINO冷卻器M25-80
        SESINO冷卻器M55-40
        SESINO冷卻器M55-50
        SESINO冷卻器M55-60
        SESINO冷卻器M55-80
        SESINO冷卻器M55-100
        SESINO冷卻器M55-120
        SESINO 3REO91261C 
        SESINO 3RAP17812
        SESINO 3RAP178
        SESINO 3RAP17824
        SESINO 3RAP2/680EB
        SESINO 3RAP2/680I4A
        SESINO 3RAP2/680I1A
        SESINO 3RAP2/730EB
        SESINO 3RAP2/730I4A
        SESINO 3RAP2/730I1A
        SESINO 3REO91247
        SESINO 3REO91247.2
        SESINO 3RAP26012T1
        SESINO 3RAP260T1
        SESINO 3RAP26024T1
        SESINO 3RAP26038T1
        SESINO 3REO91278
        SESINO 3REO91278.2
        SESINO 3RAP30012
        SESINO 3RAP300
        SESINO 3RAP30024
        SESINO 3RAP30038
        SESINO 3RAP300l4A
        SESINO 3RAP300lA
        SESINO 3RAP302
        SESINO 3RAP30224
        SESINO 3RAP30238
        SESINO 3RAP30212
        SESINO 3RAP302I4A
        SESINO 3RAP302IA
        SESINO 3RAP43012
        SESINO 3RAP43024
        SESINO 3RAP430
        SESINO 3RAP430I4A
        SESINO 3RAP430I1A
        SESINO 3RAP43212
        SESINO 3RAP43224
        SESINO 3RAP432.1
        SESINO 3RAP432I4A
        SESINO 3RAP432I1A
        SESINO 3RAP494EB
        SESINO 3RAP494I4A
        SESINO 3RAP494I1A
        SESINO 3RAP580EB
        SESINO 3RAP580I4A
        SESINO 3RAP580I1A
        SESINO 3RAP680EB
        SESINO 3RAP680I4A
        SESINO 3RAP680I1A
        SESINO
        SESINO 3RAP730I4A
        SESINO 3RAP730I1A
        SESINO 3RAP830EB
        SESINO 3RAP830EB1
        SESINO 3RAP830I4A
        SESINO 3RAP830I2A
        SESINO 3RL17012
        SESINO 3RL17012T247
        SESINO 3RL17012T260
        SESINO 3RL17024
        SESINO 3RL17024T247
        SESINO 3RL17024T260
        SESINO 3RL2/46312
        SESINO 3RL2/46312T2
        SESINO 3RL2/46312T2
        SESINO 3RL2/46324
        SESINO 3RL2/46324T2
        SESINO 3RL2/46324T2
        SESINO 3RL2/49412
        SESINO 3RL2/49412T2
        SESINO 3RL2/49412T2
        SESINO 3RL2/49424
        SESINO 3RL2/49424T2
        SESINO 3RL2/49424T2
        SESINO 3RL2/58012
        SESINO 3RL2/58012T2
        SESINO 3RL2/58012T2
        SESINO 3RL2/58024
        SESINO 3RL2/58024T2
        SESINO 3RL2/58024T2
        SESINO 3RL24012
        SESINO 3RL24012T247
        SESINO 3RL24012T260
        SESINO 3RL24024
        SESINO 3RL24024T247
        SESINO 3RL24024T260
        SESINO 3RL26312
        SESINO 3RL26312T247
        SESINO 3RL26312T260
        SESINO 3RL26324
        SESINO 3RL26324T247
        SESINO 3RL26324T260
        SESINO 3RL30012 
        SESINO 3RL30012T247
        SESINO 3RL30012T260
        SESINO 3RL30024 
        SESINO 3RL30024T247
        SESINO 3RL30024T260
        SESINO 3RL30212
        SESINO
        SESINO 3RL30212T260
        SESINO 3RL30224 
        SESINO 3RL30224T247
        SESINO 3RL30224T260
        SESINO 3RL43012 
        SESINO 3RL43012T247
        SESINO 3RL43012T260
        SESINO 3RL43024 
        SESINO 3RL43024T247
        SESINO 3RL43024T260
        SESINO 3RL43212 
        SESINO 3RL43212T247
        SESINO 3RL43212T260
        SESINO 3RL43224
        SESINO 3RL43224T247
        SESINO 3RL43224T260
        SESINO 3RL49412 
        SESINO 3RL49412T247
        SESINO 3RL49412T260
        SESINO 3RL49424 
        SESINO 3RL49424T247
        SESINO 3RL49424T260
        SESINO 3RL58012 
        SESINO 3RL58012T247
        SESINO 3RL58012T260
        SESINO 3RL58024 
        SESINO 3RL58024T247
        SESINO 3RL58024T260
        SESINO 1PSPHE18-10
        SESINO 1PSPHE18-20
        SESINO 1PSPHE18-30
        SESINO 1PSPHE18-40
        SESINO 1PSPHE18-50
        SESINO 1PSPHE25-30
        SESINO 1PSPHE25-40
        SESINO 1PSPHE25-50
        SESINO 1PSPHE25-60
        SESINO 1PSPHE25-80
        SESINO 1PSPHE55-100
        SESINO 1PSPHE55-120
        SESINO 1PSPHE55-40
        SESINO 1PSPHE55-50
        SESINO 1PSPHE55-60
        SESINO 1PSPHE55-80
        SESINO 2SC134B1CNA
        SESINO 2SC134B2CNA
        SESINO 2SC134B3CNA
        SESINO 2SC134B4CNA
        SESINO 2SC134B5CNA
        SESINO
        SESINO 2SC134B7CNA
        SESINO 2SC134CF2
        SESINO 2SC134CF3
        SESINO 2SC134CF4
        SESINO 2SC134CF5
        SESINO 2SC134CF7
        SESINO 2SC134P1
        SESINO 2SC134P2
        SESINO 2SC134P3
        SESINO 2SC134P4
        SESINO 2SC134P5
        SESINO 2SC134P6
        SESINO 2SC134P7
        SESINO 2SC84CF1
        SESINO 2SC84CF2
        SESINO 2SC84CF3
        SESINO 2SC84CF4
        SESINO 2SC84CF5
        SESINO 2SC84CF6
        SESINO 2SC84P1
        SESINO 2SC84P2
        SESINO 2SC84P3
        SESINO 2SC84P4
        SESINO 2SC84P5
        SESINO 2SC84P6
        SESINO 2SC84P7
        SESINO 2SC84P8
        SESINO 2SC84P9
        SESINO 2SC84/2B1CNA
        SESINO 2SC84/2B2CNA
        SESINO 2SC84/2B3CNA
        SESINO 2SC84/2B4CNA
        SESINO 2SC84/2B5CNA
        SESINO 2SC84/2B6CNA
        SESINO 2SC84/2B7CNA
        SESINO 2SC84/2B8CNA
        SESINO 2SC84/2B9CNA
        SESINO 2SC60CB1
        SESINO 2SC60CB2
        SESINO 2SC60CB3
        SESINO 2SC60CF2
        SESINO 2SC80CB1
        SESINO 2SC80CB2
        SESINO 2SC80CB3
        SESINO 3RRAS3000
        SESINO 3RRAS3000T 
        SESINO 3RRAS5000 
        SESINO 3RRAS5000T 
        SESINO 3RRAS7000
        sesinoMS 134 CF2 2SC134CF2
        sesinoMS 134 CF3 2SC134CF3
        sesinoMS 134 CF4 2SC134CF4
        sesinoMS 134 CF5 2SC134CF5
        sesinoMS 134 CF7 2SC134CF7
        sesinoMS 134 P1 2SC134P1
        sesinoMS 134 P2 2SC134P2
        sesinoMS 134 P3 2SC134P3
        sesinoMS 134 P4 2SC134P4
        sesinoMS 134 P5 2SC134P5
        sesinoMS 134 P6 2SC134P6
        sesinoMS 134 P7 2SC134P7
        sesinoMS 152/10 P1 2SC152/10P1
        sesinoMS 152/10 P2 2SC152/10P2
        sesinoMS 152/10 P3 2SC152/10P3
        sesinoMS 152/10 P4 2SC152/10P4
        sesinoMS 152/10 P5 2SC152/10P5
        sesinoMS 152/10 P6 2SC152/10P6
        sesinoMS 152/10 P7 2SC152/10P7
        sesinoMS 152/10 P8 2SC152/10P8
        sesinoMS 152/10 P9 2SC152/10P9
        sesinoMS 152/7 P1 2SC152/7P1
        sesinoMS 152/7 P2 2SC152/7P2
        sesinoMS 152/7 P3 2SC152/7P3
        sesinoMS 152/7 P4 2SC152/7P4
        sesinoMS 152/7 P5 2SC152/7P5
        sesinoMS 152/7 P6 2SC152/7P6
        sesinoMS 152/7 P7 2SC152/7P7
        sesinoMS 152/7 P8 2SC152/7P8
        sesinoMS 152/7 P9 2SC152/7P9
        sesinoMS 172/7 P1 2SC172/7P1
        sesinoMS 172/7 P2 2SC172/7P2
        sesinoMS 172/7 P3 2SC172/7P3
        sesinoMS 172/7 P4 2SC172/7P4
        sesinoMS 172/7 P5 2SC172/7P5
        sesinoMS 172/7 P6 2SC172/7P6
        sesinoMS 172/7 P7 2SC172/7P7
        sesinoMS 202 P1 2SC202P1
        sesinoMS 202 P10 2SC202P10
        sesinoMS 202 P2 2SC202P2
        sesinoMS 202 P3 2SC202P3
        sesinoMS 202 P4 2SC202P4
        sesinoMS 202 P5 2SC202P5
        sesinoMS 202 P6 2SC202P6
        sesinoMS 202 P7 2SC202P7
        sesinoMS 202 P8 2SC202P8
        sesinoMS 202 P9 2SC202P9
        sesinoMS 272 P1 2SC272P1
        sesinoMS 272 P2 2SC272P2
        sesinoMS 272 P3 2SC272P3
        sesinoMS 272 P4 2SC272P4
        sesinoMS 272 P5 2SC272P5
        sesinoMS 272 P6 2SC272P6
        sesinoMS 272 P7 2SC272P7
        sesinoMS 352 P1 2SC352P1
        sesinoMS 352 P2 2SC352P2
        sesinoMS 352 P3 2SC352P3
        sesinoMS 352 P4 2SC352P4
        sesinoMS 352 P5 2SC352P5
        sesinoMS 84 CF1 2SC84CF1
        sesinoMS 84 CF2 2SC84CF2
        sesinoMS 84 CF3 2SC84CF3
        sesinoMS 84 CF4 2SC84CF4
        sesinoMS 84 CF5 2SC84CF5
        sesinoMS 84 CF6 2SC84CF6
        sesinoMS 84 P1 2SC84P1
        sesinoMS 84 P2 2SC84P2
        sesinoMS 84 P3 2SC84P3
        sesinoMS 84 P4 2SC84P4
        sesinoMS 84 P5 2SC84P5
        sesinoMS 84 P6 2SC84P6
        sesinoMS 84 P7 2SC84P7
        sesinoMS 84 P8 2SC84P8
        sesinoMS 84 P9 2SC84P9
        sesinoT60 CB2 2SC60CB2
        sesinoT60 CB3 2SC60CB3
        sesinoT60 CF2 2SC60CF2
        sesinoT80 CB1 2SC80CB1
        sesinoT80 CB2 2SC80CB2
        sesinoT80 CB3 2SC80CB3sesino 1300TLV
        sesino 1302tlv
        sesino 1302TLV
        sesino 1430cnv
        sesino 1430CNV
        sesino 1430lcnv
        sesino 1430LCNV
        sesino 1432cnv
        sesino 1432CNV
        sesino 1crteo91261
        sesino 1CRTEO91261
        sesino 1cssdbopla
        sesino 1CSSDBOPLA
        sesino 1cssdsar336
        sesino 1CSSDSAR336
        sesino 1cssdsarel
        sesino 1CSSDSAREL
        sesino 1fd134b
        sesino 1FD134B
        sesino 1fd134g
        sesino 1FD134G
        sesino 1ftreo91261
        sesino 1FTREO91261
        sesino 1ftrmps100
        sesino 1FTRMPS100
        sesino 1ftrmps50
        sesino 1FTRMPS50
        sesino 1g300i
        sesino 1G300I
        sesino 1g430i
        sesino 1G430I
        sesino 1g580i
        sesino 1G580I
        sesino 1g680i
        sesino 1G680I
        sesino 1g830i
        sesino 1G830I
        sesino 1gpr178
        sesino 1GPR178
        sesino 1GRAS1000
        sesino 1gras3000
        sesino 1GRAS3000
        sesino 1gras5000
        sesino 1GRAS5000
        sesino 1gras7000
        sesino 1GRAS7000
        sesino 1gup-389
        sesino 1GUP-389
        sesino 1livtla56
        sesino 1LIVTLA56
        sesino 1mca4823a
        sesino 1MCA4823A
        sesino 1mcb4823a
        sesino 1MCB4823A
        sesino 1mcva11ap7s
        sesino 1MCVA11AP7S
        sesino 1mcva11bp7s
        sesino 1MCVA11BP7S
        sesino 1mcva14ap7
        sesino 1MCVA14AP7
        sesino 1mcva14ap7ac
        sesino 1MCVA14AP7AC
        sesino 1mcva14bp7ac
        sesino 1MCVA14BP7AC
        sesino 1mcva14bp7s
        sesino 1MCVA14BP7S
        sesino 1mcva18ap70ac
        sesino 1MCVA18AP70AC
        sesino 1mcva37a101a
        sesino 1MCVA37A101A
        sesino 1mcva37b101a
        sesino 1MCVA37B101A
        sesino 1mo2-m16
        sesino 1MO2-M16
        sesino 1mo2-m25
        sesino 1MO2-M25
        sesino 1mras3000
        sesino 1MRAS3000
        sesino 1MRAS5000
        sesino 1mras7000
        sesino 1MRAS7000
        sesino 1or3325v
        sesino 1OR3325V
        sesino 1or78x2-5
        sesino 1OR78X2-5
        sesino 1poras3000
        sesino 1PORAS3000
        sesino 1poras5000
        sesino 1PORAS5000
        sesino 1poras7000
        sesino 1PORAS7000
        sesino 1psphe18-10
        sesino 1PSPHE18-10
        sesino 1psphe18-20
        sesino 1PSPHE18-20
        sesino 1psphe18-30
        sesino 1PSPHE18-30
        sesino 1psphe18-40
        sesino 1PSPHE18-40
        sesino 1psphe18-50
        sesino 1PSPHE18-50
        sesino 1psphe25-30
        sesino 1PSPHE25-30
        sesino 1psphe25-40
        sesino 1PSPHE25-40
        sesino 1psphe25-50
        sesino 1PSPHE25-50
        sesino 1psphe25-60
        sesino 1PSPHE25-60
        sesino 1psphe25-80
        sesino 1PSPHE25-80
        sesino 1psphe55-100
        sesino 1PSPHE55-100
        sesino 1psphe55-120
        sesino 1PSPHE55-120
        sesino 1psphe55-40
        sesino 1PSPHE55-40
        sesino 1PSPHE55-50
        sesino 1psphe55-60
        sesino 1PSPHE55-60
        sesino 1psphe55-80
        sesino 1PSPHE55-80
        sesino 1rl102
        sesino 1RL102
        sesino 1rl569
        sesino 1RL569
        sesino 1rlcopat
        sesino 1RLCOPAT
        sesino 1rlcopat12
        sesino 1RLCOPAT12
        sesino 1ro00336
        sesino 1RO00336
        sesino 1ro01339
        sesino 1RO01339
        sesino 1ro01341
        sesino 1RO01341
        sesino 1ro01342
        sesino 1RO01342
        sesino 1ro02357
        sesino 1RO02357
        sesino 1ro03378
        sesino 1RO03378
        sesino 1ro08423
        sesino 1RO08423
        sesino 1ro92302
        sesino 1RO92302
        sesino 1ro99332
        sesino 1RO99332
        sesino 1rono1
        sesino 1RONO1
        sesino 1rono3
        sesino 1RONO3
        sesino 1rono4
        sesino 1RONO4
        sesino 1rtap300i
        sesino 1RTAP300I
        sesino 1RTAP430I
        sesino 1rtap580i
        sesino 1RTAP580I
        sesino 1rtap680i
        sesino 1RTAP680I
        sesino 1rtap830i
        sesino 1RTAP830I
        sesino 1sndras
        sesino 1SNDRAS
        sesino 1sndroc4m
        sesino 1SNDROC4M
        sesino 1trm0-90
        sesino 1TRM0-90
        sesino 1trm47-36
        sesino 1TRM47-36
        sesino 1trm47-36-12v-1trm47-36-24v
        sesino 1TRM47-36-12V-1TRM47-36-24V
        sesino 1trm55-42
        sesino 1TRM55-42
        sesino 1trm55-44
        sesino 1TRM55-44
        sesino 1trm60-49
        sesino 1TRM60-49
        sesino 1trm60-49-12v-1trm60-49-24v
        sesino 1TRM60-49-12V-1TRM60-49-24V
        sesino 1trm65-54
        sesino 1TRM65-54
        sesino 1trmras
        sesino 1TRMRAS
        sesino 1ts84-2b
        sesino 1TS84-2B
        sesino 1ts84-2g
        sesino 1TS84-2G
        sesino 1ts84p
        sesino 1TS84P
        sesino 1ttc6
        sesino 1TTC6
        sesino 1vn125dh12
        sesino 1VN125DH12
        sesino 1VN235DH24
        sesino 1vna2d200
        sesino 1VNA2D200
        sesino 1vna2d250-2
        sesino 1VNA2D250-2
        sesino 1vna2e200-1
        sesino 1VNA2E200-1
        sesino 1vna2e250g
        sesino 1VNA2E250G
        sesino 1vna4d500dv
        sesino 1VNA4D500DV
        sesino 1vna4d560dv
        sesino 1VNA4D560DV
        sesino 1vnap178230
        sesino 1VNAP178230
        sesino 1vnapl30012c
        sesino 1VNAPL30012C
        sesino 1vnapl30024c
        sesino 1VNAPL30024C
        sesino 1vnapl43012c
        sesino 1VNAPL43012C
        sesino 1vnapl43024c
        sesino 1VNAPL43024C
        sesino 1vnapl58024c
        sesino 1VNAPL58024C
        sesino 1vnelco43038dv
        sesino 1VNELCO43038DV
        sesino 1vnelco43238dv1
        sesino 1VNELCO43238DV1
        sesino 1vneo08586
        sesino 1VNEO08586
        sesino 1vneo91261
        sesino 1VNEO91261
        sesino 2sc134b1cna
        sesino 2SC134B1CNA
        sesino 2sc134b2cna
        sesino 2SC134B2CNA
        sesino 2sc134b3cna
        sesino 2SC134B3CNA
        sesino 2SC134B4CNA
        sesino 2sc134b5cna
        sesino 2SC134B5CNA
        sesino 2sc134b6cna
        sesino 2SC134B6CNA
        sesino 2sc134b7cna
        sesino 2SC134B7CNA
        sesino 2sc134cf2
        sesino 2SC134CF2
        sesino 2sc134cf3
        sesino 2SC134CF3
        sesino 2sc134cf4
        sesino 2SC134CF4
        sesino 2sc134cf5
        sesino 2SC134CF5
        sesino 2sc134cf7
        sesino 2SC134CF7
        sesino 2sc134p1
        sesino 2SC134P1
        sesino 2sc134p2
        sesino 2SC134P2
        sesino 2sc134p3
        sesino 2SC134P3
        sesino 2sc134p4
        sesino 2SC134P4
        sesino 2sc134p5
        sesino 2SC134P5
        sesino 2sc134p6
        sesino 2SC134P6
        sesino 2sc134p7
        sesino 2SC134P7
        sesino 2sc152-10p1
        sesino 2SC152-10P1
        sesino 2sc152-10p1cna
        sesino 2SC152-10P1CNA
        sesino 2sc152-10p2
        sesino 2SC152-10P2
        sesino 2sc152-10p2cna
        sesino 2SC152-10P2CNA
        sesino 2SC152-10P3
        sesino 2sc152-10p3cna
        sesino 2SC152-10P3CNA
        sesino 2sc152-10p4
        sesino 2SC152-10P4
        sesino 2sc152-10p4cna
        sesino 2SC152-10P4CNA
        sesino 2sc152-10p5
        sesino 2SC152-10P5
        sesino 2sc152-10p5cna
        sesino 2SC152-10P5CNA
        sesino 2sc152-10p6
        sesino 2SC152-10P6
        sesino 2sc152-10p6cna
        sesino 2SC152-10P6CNA
        sesino 2sc152-10p7
        sesino 2SC152-10P7
        sesino 2sc152-10p7cna
        sesino 2SC152-10P7CNA
        sesino 2sc152-10p8
        sesino 2SC152-10P8
        sesino 2sc152-10p8cna
        sesino 2SC152-10P8CNA
        sesino 2sc152-10p9
        sesino 2SC152-10P9
        sesino 2sc152-10p9cna
        sesino 2SC152-10P9CNA
        sesino 2sc152-7p1
        sesino 2SC152-7P1
        sesino 2sc152-7p1cna
        sesino 2SC152-7P1CNA
        sesino 2sc152-7p2
        sesino 2SC152-7P2
        sesino 2sc152-7p2cna
        sesino 2SC152-7P2CNA
        sesino 2sc152-7p3
        sesino 2SC152-7P3
        sesino 2sc152-7p3cna
        sesino 2SC152-7P3CNA
        sesino 2SC152-7P4
        sesino 2sc152-7p4cna
        sesino 2SC152-7P4CNA
        sesino 2sc152-7p5
        sesino 2SC152-7P5
        sesino 2sc152-7p5cna
        sesino 2SC152-7P5CNA
        sesino 2sc152-7p6
        sesino 2SC152-7P6
        sesino 2sc152-7p6cna
        sesino 2SC152-7P6CNA
        sesino 2sc152-7p7
        sesino 2SC152-7P7
        sesino 2sc152-7p7cna
        sesino 2SC152-7P7CNA
        sesino 2sc152-7p8
        sesino 2SC152-7P8
        sesino 2sc152-7p8cna
        sesino 2SC152-7P8CNA
        sesino 2sc152-7p9
        sesino 2SC152-7P9
        sesino 2sc152-7p9cna
        sesino 2SC152-7P9CNA
        sesino 2sc172-10p1
        sesino 2SC172-10P1
        sesino 2sc172-10p1cna
        sesino 2SC172-10P1CNA
        sesino 2sc172-10p2
        sesino 2SC172-10P2
        sesino 2sc172-10p2cna
        sesino 2SC172-10P2CNA
        sesino 2sc172-10p3
        sesino 2SC172-10P3
        sesino 2sc172-10p3cna
        sesino 2SC172-10P3CNA
        sesino 2sc172-10p4
        sesino 2SC172-10P4
        sesino 2sc172-10p4cna
        sesino 2SC172-10P4CNA
        sesino 2SC172-10P5
        sesino 2sc172-10p5cna
        sesino 2SC172-10P5CNA
        sesino 2sc172-10p6
        sesino 2SC172-10P6
        sesino 2sc172-10p6cna
        sesino 2SC172-10P6CNA
        sesino 2sc172-10p7
        sesino 2SC172-10P7
        sesino 2sc172-10p7cna
        sesino 2SC172-10P7CNA
        sesino 2sc172-7p1
        sesino 2SC172-7P1
        sesino 2sc172-7p1cna
        sesino 2SC172-7P1CNA
        sesino 2sc172-7p2
        sesino 2SC172-7P2
        sesino 2sc172-7p2cna
        sesino 2SC172-7P2CNA
        sesino 2sc172-7p3
        sesino 2SC172-7P3
        sesino 2sc172-7p3cna
        sesino 2SC172-7P3CNA
        sesino 2sc172-7p4
        sesino 2SC172-7P4
        sesino 2sc172-7p4cna
        sesino 2SC172-7P4CNA
        sesino 2sc172-7p5
        sesino 2SC172-7P5
        sesino 2sc172-7p5cna
        sesino 2SC172-7P5CNA
        sesino 2sc172-7p6
        sesino 2SC172-7P6
        sesino 2sc172-7p6cna
        sesino 2SC172-7P6CNA
        sesino 2sc172-7p7
        sesino 2SC172-7P7
        sesino 2sc172-7p7cna
        sesino 2SC172-7P7CNA
        sesino 2SC202P1
        sesino 2sc202p10
        sesino 2SC202P10
        sesino 2sc202p10cna
        sesino 2SC202P10CNA
        sesino 2sc202p1cna
        sesino 2SC202P1CNA
        sesino 2sc202p2
        sesino 2SC202P2
        sesino 2sc202p2cna
        sesino 2SC202P2CNA
        sesino 2sc202p3
        sesino 2SC202P3
        sesino 2sc202p3cna
        sesino 2SC202P3CNA
        sesino 2sc202p4
        sesino 2SC202P4
        sesino 2sc202p4cna
        sesino 2SC202P4CNA
        sesino 2sc202p5
        sesino 2SC202P5
        sesino 2sc202p5cna
        sesino 2SC202P5CNA
        sesino 2sc202p6
        sesino 2SC202P6
        sesino 2sc202p6cna
        sesino 2SC202P6CNA
        sesino 2sc202p7
        sesino 2SC202P7
        sesino 2sc202p7cna
        sesino 2SC202P7CNA
        sesino 2sc202p8
        sesino 2SC202P8
        sesino 2sc202p8cna
        sesino 2SC202P8CNA
        sesino 2sc202p9
        sesino 2SC202P9
        sesino 2sc202p9cna
        sesino 2SC202P9CNA
        sesino 2SC60CB1
        sesino 2sc60cb2
        sesino 2SC60CB2
        sesino 2sc60cb3
        sesino 2SC60CB3
        sesino 2sc80cb1
        sesino 2SC80CB1
        sesino 2sc80cb2
        sesino 2SC80CB2
        sesino 2sc80cb3
        sesino 2SC80CB3
        sesino 2sc84-2b1cna
        sesino 2SC84-2B1CNA
        sesino 2sc84-2b2cna
        sesino 2SC84-2B2CNA
        sesino 2sc84-2b3cna
        sesino 2SC84-2B3CNA
        sesino 2sc84-2b4cna
        sesino 2SC84-2B4CNA
        sesino 2sc84-2b5cna
        sesino 2SC84-2B5CNA
        sesino 2sc84-2b6cna
        sesino 2SC84-2B6CNA
        sesino 2sc84-2b7cna
        sesino 2SC84-2B7CNA
        sesino 2sc84-2b8cna
        sesino 2SC84-2B8CNA
        sesino 2sc84-2b9cna
        sesino 2SC84-2B9CNA
        sesino 2sc84cf1
        sesino 2SC84CF1
        sesino 2sc84cf2
        sesino 2SC84CF2
        sesino 2sc84cf3
        sesino 2SC84CF3
        sesino 2sc84cf4
        sesino 2SC84CF4
        sesino 2sc84cf5
        sesino 2SC84CF5
        sesino 2SC84CF6
        sesino 2sc84p1
        sesino 2SC84P1
        sesino 2sc84p2
        sesino 2SC84P2
        sesino 2sc84p3
        sesino 2SC84P3
        sesino 2sc84p4
        sesino 2SC84P4
        sesino 2sc84p5
        sesino 2SC84P5
        sesino 2sc84p6
        sesino 2SC84P6
        sesino 2sc84p7
        sesino 2SC84P7
        sesino 2sc84p8
        sesino 2SC84P8
        sesino 2sc84p9
        sesino 2SC84P9
        sesino 2si134sup
        sesino 2SI134SUP
        sesino 2si134tsbc
        sesino 2SI134TSBC
        sesino 2si134tsgc
        sesino 2SI134TSGC
        sesino 2si84-2fdbc
        sesino 2SI84-2FDBC
        sesino 2si84-2fdgc
        sesino 2SI84-2FDGC
        sesino 2si84fdp
        sesino 2SI84FDP
        sesino 2si84sup
        sesino 2SI84SUP
        sesino 2si84sup-p
        sesino 2SI84SUP-P
        sesino 2sita134-1
        sesino 2SITA134-1
        sesino 2sita84-1
        sesino 2SITA84-1
        sesino 3CN178-1
        sesino 3cn430i-1
        sesino 3CN430I-1
        sesino 3cnap260-1
        sesino 3CNAP260-1
        sesino 3cnap260ca-1
        sesino 3CNAP260CA-1
        sesino 3cnap2-680eb-1
        sesino 3CNAP2-680EB-1
        sesino 3cnap2-680o-1
        sesino 3CNAP2-680O-1
        sesino 3cnap2-730eb-1
        sesino 3CNAP2-730EB-1
        sesino 3cnap2-730i-1
        sesino 3CNAP2-730I-1
        sesino 3cnap2-830i-1
        sesino 3CNAP2-830I-1
        sesino 3cnap300cc
        sesino 3CNAP300CC
        sesino 3cnap300i-1
        sesino 3CNAP300I-1
        sesino 3cnap302
        sesino 3CNAP302
        sesino 3cnap302cc
        sesino 3CNAP302CC
        sesino 3cnap302i-1
        sesino 3CNAP302I-1
        sesino 3cnap494eb-1
        sesino 3CNAP494EB-1
        sesino 3cnap494i-1
        sesino 3CNAP494I-1
        sesino 3cnap580-1
        sesino 3CNAP580-1
        sesino 3cnap580eb-1
        sesino 3CNAP580EB-1
        sesino 3cnap680-1
        sesino 3CNAP680-1
        sesino 3cnap680eb-1
        sesino 3CNAP680EB-1
        sesino 3CNAP730EB-1
        sesino 3cnap730ia-1
        sesino 3CNAP730IA-1
        sesino 3cnap830eb-1
        sesino 3CNAP830EB-1
        sesino 3cnap830ia-1
        sesino 3CNAP830IA-1
        sesino 3cne091247-1
        sesino 3CNE091247-1
        sesino 3cneo08586-1
        sesino 3CNEO08586-1
        sesino 3cneo91247-1
        sesino 3CNEO91247-1
        sesino 3cneo91261-1
        sesino 3CNEO91261-1
        sesino 3cneo91278-1
        sesino 3CNEO91278-1
        sesino 3cnl170-1
        sesino 3CNL170-1
        sesino 3cnl2-463-1
        sesino 3CNL2-463-1
        sesino 3cnl2-494-1
        sesino 3CNL2-494-1
        sesino 3cnl2-580-1
        sesino 3CNL2-580-1
        sesino 3cnl300-1
        sesino 3CNL300-1
        sesino 3cnl302-1
        sesino 3CNL302-1
        sesino 3cnl494-1
        sesino 3CNL494-1
        sesino 3cnl580-1
        sesino 3CNL580-1
        sesino 3kit4135
        sesino 3KIT4135
        sesino 3kit4232
        sesino 3KIT4232
        sesino 3kit4511
        sesino 3KIT4511
        sesino 3RAP1200EB
        sesino 3rap178
        sesino 3RAP178
        sesino 3rap17812
        sesino 3RAP17812
        sesino 3rap17824
        sesino 3RAP17824
        sesino 3rap26012t1
        sesino 3RAP26012T1
        sesino 3rap26024t1
        sesino 3RAP26024T1
        sesino 3rap26038t1
        sesino 3RAP26038T1
        sesino 3rap260t1
        sesino 3RAP260T1
        sesino 3rap2-680eb
        sesino 3RAP2-680EB
        sesino 3rap2-680i1a
        sesino 3RAP2-680I1A
        sesino 3rap2-680i4a
        sesino 3RAP2-680I4A
        sesino 3rap2-730eb
        sesino 3RAP2-730EB
        sesino 3rap2-730i1a
        sesino 3RAP2-730I1A
        sesino 3rap2-730i4a
        sesino 3RAP2-730I4A
        sesino 3rap2-830i2a
        sesino 3RAP2-830I2A
        sesino 3rap2-830i4a
        sesino 3RAP2-830I4A
        sesino 3rap300
        sesino 3RAP300
        sesino 3rap30012
        sesino 3RAP30012
        sesino 3rap30024
        sesino 3RAP30024
        sesino 3rap30038
        sesino 3RAP30038
        sesino 3RAP300I4A
        sesino 3rap300ia
        sesino 3RAP300IA
        sesino 3rap302
        sesino 3RAP302
        sesino 3rap30212
        sesino 3RAP30212
        sesino 3rap30224
        sesino 3RAP30224
        sesino 3rap30238
        sesino 3RAP30238
        sesino 3rap302i4a
        sesino 3RAP302I4A
        sesino 3rap302ia
        sesino 3RAP302IA
        sesino 3rap430
        sesino 3RAP430
        sesino 3rap43012
        sesino 3RAP43012
        sesino 3rap43024
        sesino 3RAP43024
        sesino 3rap430i1a
        sesino 3RAP430I1A
        sesino 3rap430i4a
        sesino 3RAP430I4A
        sesino 3rap432-1
        sesino 3RAP432-1
        sesino 3rap43212
        sesino 3RAP43212
        sesino 3rap43224
        sesino 3RAP43224
        sesino 3rap432i1a
        sesino 3RAP432I1A
        sesino 3rap432i4a
        sesino 3RAP432I4A
        sesino 3rap494eb
        sesino 3RAP494EB
        sesino 3rap494i1a
        sesino 3RAP494I1A
        sesino 3RAP494I4A
        sesino 3rap580eb
        sesino 3RAP580EB
        sesino 3rap580i1a
        sesino 3RAP580I1A
        sesino 3rap580i4a
        sesino 3RAP580I4A
        sesino 3rap680eb
        sesino 3RAP680EB
        sesino 3rap680i1a
        sesino 3RAP680I1A
        sesino 3rap680i4a
        sesino 3RAP680I4A
        sesino 3rap730eb
        sesino 3RAP730EB
        sesino 3rap730i1a
        sesino 3RAP730I1A
        sesino 3rap730i4a
        sesino 3RAP730I4A
        sesino 3rap830eb
        sesino 3RAP830EB
        sesino 3rap830i2a
        sesino 3RAP830I2A
        sesino 3rap830i4a
        sesino 3RAP830I4A
        sesino 3reo91247
        sesino 3REO91247
        sesino 3reo91261
        sesino 3REO91261
        sesino 3reo91261c
        sesino 3REO91261C
        sesino 3reo91261c-1
        sesino 3REO91261C-1
        sesino 3reo91278
        sesino 3REO91278
        sesino 3rl17012-3rl17024
        sesino 3RL17012-3RL17024
        sesino 3rl17012t260-3rl17024t260
        sesino 3RL17012T260-3RL17024T260
        sesino 3RL24012-3RL24024
        sesino 3rl24012t260-3rl24024t260
        sesino 3RL24012T260-3RL24024T260
        sesino 3rl2-46312-3rl2-46324
        sesino 3RL2-46312-3RL2-46324
        sesino 3rl2-46312t260-3rl2-46324t260
        sesino 3RL2-46312T260-3RL2-46324T260
        sesino 3rl2-49412-3rl2-49424
        sesino 3RL2-49412-3RL2-49424
        sesino 3rl2-49412t260-3rl2-49424t260
        sesino 3RL2-49412T260-3RL2-49424T260
        sesino 3rl2-58012-3rl2-58024
        sesino 3RL2-58012-3RL2-58024
        sesino 3rl2-58012t260-3rl2-58024t260
        sesino 3RL2-58012T260-3RL2-58024T260
        sesino 3rl26312-3rl26324
        sesino 3RL26312-3RL26324
        sesino 3rl30012-3rl30024
        sesino 3RL30012-3RL30024
        sesino 3rl30012t260-3rl30024t260
        sesino 3RL30012T260-3RL30024T260
        sesino 3rl30212-3rl30224
        sesino 3RL30212-3RL30224
        sesino 3rl30212t260-3rl30224t260
        sesino 3RL30212T260-3RL30224T260
        sesino 3rl43012-3rl43024
        sesino 3RL43012-3RL43024
        sesino 3rl43012t260-3rl43024t260
        sesino 3RL43012T260-3RL43024T260
        sesino 3rl43212-3rl43224
        sesino 3RL43212-3RL43224
        sesino 3rl43212t260-3rl43224t260
        sesino 3RL43212T260-3RL43224T260
        sesino 3rl49412-3rl49424
        sesino 3RL49412-3RL49424
        sesino 3rl49412t260-3rl49424t260
        sesino 3RL49412T260-3RL49424T260
        sesino 3rl58012-3rl58024
        sesino 3RL58012-3RL58024
        sesino 3RL58012T260-3RL58024T260
        sesino 3rnap260
        sesino 3RNAP260
        sesino 3rnap300
        sesino 3RNAP300
        sesino 3rnap302
        sesino 3RNAP302
        sesino 3rnap430e
        sesino 3RNAP430E
        sesino 3rnap432e
        sesino 3RNAP432E
        sesino 3rnap432tp
        sesino 3RNAP432TP
        sesino 3rnap580e
        sesino 3RNAP580E
        sesino 3rnap680e
        sesino 3RNAP680E
        sesino 3rnap730e
        sesino 3RNAP730E
        sesino 3rnap830e
        sesino 3RNAP830E
        sesino 3rneo91247
        sesino 3RNEO91247
        sesino 3rneo91261
        sesino 3RNEO91261
        sesino 3rneo91278
        sesino 3RNEO91278
        sesino 3rnl263
        sesino 3RNL263
        sesino 3rnl300
        sesino 3RNL300
        sesino 3rnl302
        sesino 3RNL302
        sesino 3rnl430
        sesino 3RNL430
        sesino 3rnl580
        sesino 3RNL580
        sesino 3rras1000
        sesino 3RRAS1000
        sesino 3RRAS1000T
        sesino 3rras3000
        sesino 3RRAS3000
        sesino 3rras3000t
        sesino 3RRAS3000T
        sesino 3rras5000
        sesino 3RRAS5000
        sesino 3rras5000t
        sesino 3RRAS5000T
        sesino 3rras7000
        sesino 3RRAS7000
        sesino 3rras7000t
        sesino 3RRAS7000T
        sesino 3rt430cc-1
        sesino 3RT430CC-1
        sesino 3rtras1000-1
        sesino 3RTRAS1000-1
        sesino 3rtras3000-1
        sesino 3RTRAS3000-1
        sesino 3rtras5000-1
        sesino 3RTRAS5000-1
        sesino 3rtras7000-1
        sesino 3RTRAS7000-1
        sesino 3stfl170-1
        sesino 3STFL170-1
        sesino 3tbsfeo91261-1
        sesino 3TBSFEO91261-1
        sesino 3tl178-1
        sesino 3TL178-1
        sesino 3tlpras1000-1
        sesino 3TLPRAS1000-1
        sesino 3tlpras3000-1
        sesino 3TLPRAS3000-1
        sesino 3tlpras5000-1
        sesino 3TLPRAS5000-1
        sesino 3tlpras7000-1
        sesino 3TLPRAS7000-1
        sesino 3tlras1000-1
        sesino 3TLRAS1000-1
        sesino 3TLRAS3000-1
        sesino 3tlras5000-1
        sesino 3TLRAS5000-1
        sesino 3tlras7000-1
        sesino 3TLRAS7000-1

        快速報價系列TOGNELLA流量控制閥FT 1254/5-01工作方式
        搪玻璃面的焊縫應無明顯的凸起。在這里告訴大家一個專業知識,金屬基體凸起部位(也就是外圓弧部位)的搪玻璃層在較高溫度下,由于搪玻璃層和金屬基體熱膨脹系數的差異,會受到拉應力的作用,而搪玻璃層是脆性材料,抗拉應力的性能很差。在金屬基體上盡量減少凸起部位的出現,凸起的焊縫應盡量磨平。搪玻璃面不應有明顯的凹坑。凹坑是修磨鐵胎金屬基體表面的缺陷留下的,凹坑越多,說明所用的鋼板的表面質量差,這種鋼板不適宜用于搪玻璃設備。
      免責聲明:焊材網轉載作品均注明出處,本網未注明出處和轉載的,是出于傳遞更多信息之目的,并不意味 著贊同其觀點或證實其內容的真實性。如轉載作品侵犯作者署名權,或有其他諸如版權、肖像權、知識產權等方面的傷害,并非本網故意為之,在接到相關權利人通知后將立即加以更正。聯系電話:0571-87774297。
      0571-87774297  
      91精品国产综合久久婷婷