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。
The pressure dynamic proceedings of three cross-section of 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。
Reasonable type of road cross section could ensure the smooth vehicle flow, at the same time, it could reduce the pollution of traffic to environment through reasonable greening arrangement.
合理的道路横断面型式一方面可以保证车流的畅通，另一方面也可以通过合理的绿化布置减少交通对环境的污染。
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