硬厚片麻岩下综放采煤覆岩破坏规律初探

硬厚片麻岩下综放采煤覆岩破坏规律初探的英文翻译

基本释义

• PRELIMINARY STUDY OF OVERBURDEN BREAKDOWN LAW WITH FULL MECHANISED TOP COAL CAVING MINING UNDER THICK AND HARD GNEISS