英语词汇“standing valve”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	standing valve
释义	standing valve noun : a foot valve at the bottom of an oil-well pump
随便看	order bill of lading orderboard order book order buyer ordered ordered ordered lattice orderer order-in-council ordering orderless orderliness orderly orderly orderly book orderly officer orderly room orderly sergeant order of a reaction order of battle order of business order of contact order of magnitude order of service order of the day

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