切割硬岩
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hard rock cutting a
坚硬的岩石切割
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The results show that mighty compound cutting can give a good effect of sinking and blasting in hard rock shaft, and sinking velocity adopted for 2.
试验表明：强力复合掏槽在特硬岩立井掘进爆破中应用效果良好；2。
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The muscular man is working hard to control a powerful drill that is cutting through the rock that surrounds him.
VOA: special.2009.03.23
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