Control valve is a pipe attachment, which is used to change the channel cross-section and flow direction, the control flow of a medium transport device.
调节阀是一种管路附件，它是用来改变通路断面和介质流动方向，控制输送介质流动的一种装置。
2
The pressure dynamic proceedings of three cross-sectionof the stator surface had been investigated to understand the flow structure in a compressor.
并采取在静子叶片表面埋入微型压力传感器的方法，分析了压气机流场的动态压力特性。
3
Especially they improved the thickness of curved way water tongue and the uniformity of current velocity which distribute in a crosssection, promise the stability and the safety of the end jet flow.