positive-displacement metering valve
... positive valve 正压阀 positive-displacement metering valve 容积式计量阀; 步进式计量阀 positively actuated valve 正动阀 ...
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displacement metering valve
... metering pin valve 调节针阀 displacement metering valve 容积式计量阀 ; 步进式计量阀 BMV Brake metering valve 刹车计量活门 ...
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