可开采的原料供应短缺。
当今煤炭动力的开采要重视可连续成长，不克不及杀鸡取卵。
The coal mining power should pay attention to continuous growth, cannot kill the goose.
探索有效的特厚复杂结构煤层小块段的开采方式，可提高效益，降低消耗，开采简单，便于生产。
The effective mining method at small piece section of superhigh and complicated seam is explored.
探索有效的特厚复杂结构煤层小块段的开采方式，可提高效益，降低消耗，开采简单，便于生产。
The effective mining method at small piece section of superhigh and complicated seam is explored.
应用推荐