英语词汇“beam-balanced 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	beam-balanced pump
释义	beam-balanced pump beam-balanced pump [′bēm ‚bal·ənst ′pəmp] (petroleum engineering) An oil well pumping unit having a center-pivoted beam with the sucker rod plunger (pump) at the front end and a counterweight on the rearward extension.
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