名词
中文翻译：Unknown
同义词：
['positive displacement pump', 'positive displacement compressor']
例句：
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1. The positive displacement pump is used to increase the pressure of the oil.
正排量泵用于提高油的压力。
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2.The positive displacement pump is a common type of compressor in many industrial applications.
正排量泵是许多工业应用中常见的压缩机类型。
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3. The positive displacement pump has been widely used in the oil industry for its efficiency and reliability.
正排量泵因其效率和可靠性而被广泛应用于石油工业。