highwall mining with auger machine的意思|示意
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用螺旋钻机进行高壁采矿
highwall mining with auger machine的网络常见释义
螺旋钻机开采 ...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.