drifting mines翻译
drifting mines的基本解释
读音: 美: 英:
砂矿
例句
Bad strata are often encountered in the process of drifting in mines, if improperly treated, they will lead to serious deformation of drift, even collapse, so as to increase the amount of repair work.在矿山巷道掘进施工中，经常会遇到不良岩层，若处理不当，会导致巷道严重变形，甚至坍塌，使返修工作量增大。
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