英语词汇“pump by heads”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	pump by heads
释义	pump by heads phrasal : to pump (a well producing a small quantity) intermittently by allowing the contents to accumulate to a certain depth and then emptying the well
随便看	hemibranchii hemic hemicardia hemicellulose hemicellulosic hemicentrum hemicephalic hemicephalous hemicerebrum hemicholinium hemichorda hemichordata hemichordate hemicrania hemicryptophyte hemicryptophytic hemicrystalline hemictic hemicycle hemicyclic hemidactylous hemidactylus hemidemisemiquaver hemidiaphragm hemidome

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