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drill string英英字典_drill string剑桥英语解释_drill string柯林斯英文解释_歐米惠必应词典
歐米惠必应词典

drill string

D 开头单词

柯林斯词典

    drill string (also drill pipe)

  • 1. N (in the oil industry) a pipe made of lengths of steel tubing that is attached to the drilling tool and rotates during drilling to form a bore 鑽柱

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