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全部科目 > 石油石化技能考试 > 海上油气生产监督考试

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翻译：The main function of a rotary rig is to drill a hole, or as it is known in the industry, to make hole.

【参考答案】

旋转钻机的主要功能是钻孔或是工业上所熟知的打孔。

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