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

单词	suction pump
释义	suction pump noun : a common pump in which the liquid to be raised is pushed by atmospheric pressure into the partial vacuum under a retreating valved piston on the upstroke and reflux is prevented by a nonreturn valve in the pipe
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