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METHOD OF FIGHTING SUDDEN OUTBURSTS OF COAL AND GAS
METHOD OF FIGHTING SUDDEN OUTBURSTS OF COAL AND GAS
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机译:应对煤与瓦斯突泻的方法
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摘要
the invention относитс to develop (i: processing выбросоопасных coal seams and повьшает effectiveness against sudden emissions.in the mountain of her face бур т control шпуры depth 5.5 5.6 m, a diame
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