coal blasting
... 钻眼爆破法 drilling and blasting method 爆破落煤 coal blasting 爆破装煤 blasting loading ...
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摘要：随着煤矿生产机械化程度的不断提高，作为传统采煤方法的爆破落煤已逐渐被机械采煤所代替。
Abstract: with the mine production mechanization degree unceasing enhancement, as a traditional method of coal blasting fall coal mining machinery has gradually be replaced.
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