It is designed for increasing the accuracy of gas -mixed proportion and the stability of flowing gases.

其目的是为提高气体混合比的精度和气体流量稳定程度而设计的。

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It is designed for increasing the accuracy of gas -mixed proportion and the stability of flowing gases.

其目的是为提高气体混合比的精度和气体流量稳定程度而设计的。

youdao