rotary valve key的意思|示意

One of the key problems of designing the control valve of modulation rotary steering drilling tool is the design of high pressure hole of upside valve.

设计调制式旋转导向钻井工具控制阀的关键问题之一是上盘阀高压孔的设计。

The timing of the rotary valve, which is a key operating parameter for cryocoolers, determines the relationship between the intake and exhaust process.

而平面旋转阀的时序又是低温制冷机的一个重要参数，它决定了制冷机系统进气、排气过程之间的相互关系。