名词
中文翻译：旋转式油泵
同义词：
['rotary pump', 'rotary compressor']
例句：
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1. The rotary oil pump is usedto pump oil from the ground.
旋转式油泵用于从地面抽取油。
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2. Therotary oil pump is essential for maintainingthe oil pressure in the engine.
旋转式油泵对于保持发动机中的油压至关重要。
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3. The rotary oil pump was designedto improve efficiency and reduce maintenance costs.
旋转式油泵被设计来提高效率并减少维护成本。