Through the field tests, the machine reaches the aim to resolve effectively the difficult problem on direction control during horizontal drilling.
该设备经过现场试验，取得了理想的效果，有效地解决了水平螺旋钻机钻进过程中控向的难题。
Through the field tests, the machine reaches the aim to resolve effectively the difficult problem on direction control during horizontal drilling.
该设备经过现场试验，取得了理想的效果，有效地解决了水平螺旋钻机钻进过程中控向的难题。
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