名词
中文翻译：泵的升降机构
同义词：
['pump lifter', 'pump actuator']
例句：
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1. The engineer designed a new lift ofpump to improve efficiency.
工程师设计了一种新型泵升降机构以提高效率。
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2. The pumplifter is responsible forlifting the piston up anddown.
泵升降机构负责将活塞上下移动。
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3. The pump actuator controls theflow of fluid through the system.
泵执行器控制流体通过系统的流动。