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Terms for subject Technology containing 上 向钻孔 | all forms | in specified order only
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上向孔钻进over head drilling
上向钻孔up-over borehole
上向钻孔rising borehole
上向钻孔工作uphole work
向上钻孔upward drill-hole
向上钻孔upward-pointing hole
向上钻孔upward borehole
向上钻孔侵蚀upward drilling