Secondary rock breaking is important production link in mines.
矿岩二次破碎是矿山重要的生产环节.
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There is a huge rock breaking through the snows.
一块巨大的岩石凸出在雪地上.
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On - going water spraying or dust enclosure should be applied during drilling or rock breaking.
打石或钻探期间,需经常洒水或以围封防止尘埃飞扬.
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A set of new methods of evaluating rock - breaking effect was developed on the basis of ABAQUS.
开发了一套基于ABAQUS有限 元仿真分析评价齿形破岩效果新方法.
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