英语词汇“cup packer”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	cup packer
释义	cup packer cup packer [′kəp ‚pak·ər] (petroleum engineering) A cup-shaped sealing device inserted into the drill stem and lowered into a well to permit pressure testing of the casing and blowout preventers.
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