请调节阀门开度。
分析了减压阀的流量、压力、压力差和阀门开度的关系。
Analyze the relationship between flow, pressure, pressure differential and valve opening of pressure reducing valves.
设计了一种实用的阀门开度检测器，该检测器具有结构简单、成本低等特点。
The paper introduces the design of a practical valve opening detector which has the characteristics of simple structure and low cost.
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