主要作用是调节介质的压力、流量、温度等等参数，是工艺环路中最终的控制元件。

Main role is to regulate the media pressure, flow, temperature, etc. parameters, is the final process control elements in the loop.

youdao

主要作用是调节介质的压力、流量、温度等等参数，是工艺环路中最终的控制元件。

Main role is to regulate the media pressure, flow, temperature, etc. parameters, is the final process control elements in the loop.

youdao