英语词汇“rotary pump”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	rotary pump
释义	rotary pump noun : a valveless pump in which the fluid is positively pushed by meshing vanes on parallel revolving shafts and meshing screws into the discharge pipe
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