名词
中文翻译：直接作用泵
同义词：
['direct-acting motor', 'direct-acting valve', 'direct-acting pump']
例句：
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1. The newdirect-acting pump is more efficient than the old one.
新型直接作用泵比旧的更高效。
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2. The engineer designed a direct-acting pump to improve water flow.
工程师设计了一款直接作用泵来提高水流。
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3. Direct-acting pumps are commonly used in industrial processes to control fluid flow.
直接作用泵在工业过程中被广泛使用，用于控制流体流动。