... differential unit；差速器单元 differential valve；差动阀 differential valve operation；差动阀的工作 ...
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... differential sliding valve 差动滑阀 differential valve 差动阀; 差压阀 diffuser valve 扩散阀 ...
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vacuum differential valve 真空差压阀
Pressure differential valve 压力差动阀 ; 差压阀
pressure differential valve operation 压力差动阀的工作
VDV Vacuum Differential Valve 真空差压阀
pressure differential valve test 压力差动阀试验
differential valve operation 差动阀的工作
Fixed differential reducing valve 定差减压阀 ; 定差降低压力阀
differential pressure regulating valve [自] 差压调节阀 ; 差压调整阀 ; 差压调治阀
Measure and record the differential pressure across the valve using a Watts Series PG meter. CAUTION: Safety glasses should be used.
采用美国瓦茨系列PG仪器测量和记录通过阀门的压差。警告：应该使用安全眼镜。
Requirements: the pressure differential relief valve must operate to maintain the "zone" between the two check valves at least 2 PSI less than the supply pressure.
要求：压差安全阀必须具有将两个止回阀之间的“区域”压力维持在比供应压力低至少2 P SI的功能。
Connect differential pressure switch wire to the combination valve.
连接差速压力开关线至组合阀。
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