英语词汇“jack line”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	jack line
释义	jack line jack line [′jak ‚līn] (petroleum engineering) A steel cable or rod that connects the arms of the central pumping engine to the two or more wells that are being pumped.
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