The results of field tests proved that PDC anchor bit is ideal in mid hard rock drilling.

现场试验结果表明，PDC锚杆钻头是钻进中硬岩层的理想钻头。

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The results of field tests proved that PDC anchor bit is ideal in mid hard rock drilling.

现场试验结果表明，PDC锚杆钻头是钻进中硬岩层的理想钻头。

youdao