Valve - opening是什么意思 Valve - opening怎么读
Valve - opening的用法和样例
- The stem rises and lowers as the valve is opened and closed.
当阀门开启或关闭时，阀杆上升或下降。 - The valve opens for tank discharge when tank head pressure is greater than valve inlet pressure.
当容器水头压力大于阀门进口压力时，阀门开启进行容器排放。
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