percussion rotary drilling technology
percussion rotary drilling technology
冲击旋转钻井技术
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The rotary percussion drilling technology have the advantage to raise the hard rock well drilling speed effectively, prevent the borehole deviation in the hard rock or the complicated geologic strata.
旋转冲击钻井技术依靠冲击器产生冲击载荷并作用在钻头上来破碎岩石。该技术能够有效提高硬地层钻井速度，能够防止硬地层及复杂地层钻井中的井斜问题。
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