butterfly valve

常见例句

A built-in butterfly-shaped check valve for an insulating jacket serves heat insulating function.
一种具有保温设置的保温夹套内装式蝶型止回阀。
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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.
盘式活门，（老式叫法：蝶形活门），利用作动简进行操作，安装在管道上的旋转装置。用来控制管道的通断。
Problems about hydraulic control butterfly-valve are analyzed, and some irrational design and some improvement method are also put forward.
分析了循环水泵出口液控蝶阀控制回路存在的问题，提出了改进的措施。