highwall mining with auger machine
...ywords rock mechanics;highwall mining with auger machine;mechanical effect;coal pillar;stability; 岩石力学;螺旋钻机开采;力学效应;煤柱;稳定性; Oil feeds into the machine through this tubing.
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highwall mining with auger machine
螺旋机高壁采矿
以上为机器翻译结果，长、整句建议使用 人工翻译 。