Regarding to the problem, XC-82 hydraulic rotary impact drilling tools and matching bits are developed by Daqing Geophysical Exploration Corporation.
针对这一问题，大庆物探公司研制出XC- 82型液力旋冲钻具及配套钻头。
Regarding to the problem, XC-82 hydraulic rotary impact drilling tools and matching bits are developed by Daqing Geophysical Exploration Corporation.
针对这一问题，大庆物探公司研制出XC- 82型液力旋冲钻具及配套钻头。
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