为什么直行程调节阀阀杆较细？

Why straight trip regulating valve stem smaller?

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有效行程区是调节阀流量调节特性所研究的区域。

The effective movement region is the research region of the flow adjusting characteristics of regulator.

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如果按行程特点，调节阀可分为直行程和角行程；

If press trip characteristics, the regulator can be divided into straight travel and quarter-turn;

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如果按行程特点，调节阀可分为直行程和角行程；

If press trip characteristics, the regulator can be divided into straight travel and quarter-turn;

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