Aimed at the reality of local mines, this paper inquired into the improving coal mining to get the results of increase in coal qualities and decrease in cost.

针对地方煤矿的实际情况，在采煤方法上进行探索，达到提高煤质，降低成本的目的。

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Aimed at the reality of local mines, this paper inquired into the improving coal mining to get the results of increase in coal qualities and decrease in cost.

针对地方煤矿的实际情况，在采煤方法上进行探索，达到提高煤质，降低成本的目的。

youdao