名词
中文翻译：泵单元
同义词：
['pump unit', 'pump assembly例句：1. The pump unit is responsible for circulating water in the system.（泵单元负责系统内水的循环。）']
例句：
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1. The pump unit is responsible for circulating water in the system.
泵单元负责系统内水的循环。
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2.The pump unit needs to be replaced after a certain period of use.
泵单元在使用一段时间后需要更换。
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3. The pump unit is an essential component of the water treatment system.
泵单元是水处理系统的必备组件。