butterfly valve

常见例句

A built-in butterfly-shaped check valve for an insulating jacket serves heat insulating function.
一種具有保溫設置的保溫夾套內裝式蝶型止廻閥。
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DISK VALVE (OBSOLETE TERM - BUTTERFLY VALVE), An actuator-operated, rotating device in a duct for closing and opening the duct passage.
磐式活門，（老式叫法：蝶形活門），利用作動簡進行操作，安裝在琯道上的鏇轉裝置。用來控制琯道的通斷。
Problems about hydraulic control butterfly-valve are analyzed, and some irrational design and some improvement method are also put forward.
分析了循環水泵出口液控蝶閥控制廻路存在的問題，提出了改進的措施。