rotary percussion drilling

短语词组

短语

• rotary y percussion drilling 旋转冲唤钻进
• percussion rotary drilling technology 冲击旋转钻井技术
• percussion rotary drilling 冲击回转钻进
• percussion -rotary drilling technique 冲击旋转钻进技术
• hydraulic percussion and rotary drilling 液动冲击回转钻进
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