... pressure-treated wood 经加压处理的木材 pressurevaccuum valve 真空压力阀 pressure-vacuum gauge 真空压力计 ...
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... vacuum control valve 真空控制阀 vacuum pressure valve 真空压力阀 vacuum relay valve 真空继动阀; 真空式自动转换阀门 ...
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真空压力阀 pre urevaccuum valve; pressurevaccuum valve; vacuum pressure valve 主磁力阀 master magnet valve .
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石油的压力会迫使它上升到真空阀的中心处。
The oil pressure will force it up into the heart of the stack of valves.
TK - DL可以检测压力真空断路阀，减压防回流阀或双止回阀总成。
The TK-DL can test pressure vacuum breakers, reduced pressure backflow preventers or double check valve assemblies.
适用于检测压力真空断路阀，减压防回流阀或双止回阀总成，不再需要压力表和压差表。
Designed to test pressure vacuum breakers, reduced pressure backflow preventers or double check valve assemblies, allowing you to eliminate both pressure and differential test gauges.
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