... 单级泵 single-stage pump 单级阀 single-stage valve 单级减速齿轮 single reduction gear ...
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介绍了一种新型的压力先导控制伺服阀，该阀的功率放大级采用双阀芯结构代替传统单阀芯结构。
A new servovalve using a pressure control pilot state was introduced, which USES two spools instead of single spool in power magnifying stage.
进口卫生泵的型为单级、单吸、全封闭不锈钢离心泵或者气动隔膜阀。
Sanitary pump is single stage, single suction, full closed stainless steel centrifugal pump or pneumatic diaphragm valve.
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