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METHOD OF FORECASTING STRENGTH OF COAL-BEARING ROCK
METHOD OF FORECASTING STRENGTH OF COAL-BEARING ROCK
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机译:煤岩强度预测方法
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摘要
the invention относитс to coal mining and геологоразведочным отрасл м and is дл определени physico mechanical properties of rocks in the environment ви х wells.the purpose of изобретени - improvin
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