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METHOD OF PREPARING A GROUP OF STEEP EXPLOSION-HAZARDOUS SEAMS FOR MINING AT GREAT DEPTHS
METHOD OF PREPARING A GROUP OF STEEP EXPLOSION-HAZARDOUS SEAMS FOR MINING AT GREAT DEPTHS
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机译:制备用于大深度开采的陡峭爆炸危险煤层的方法
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摘要
the invention относитс to the case; the goal is повьшение efficiencyby shortening the preparation time for developing and improving the safety of проведени mining by повышени efficiency загцит for
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