• 松散沙层 - 引用次数：3

  The Shenfu Dongsheng mining area is our country proven reserves biggest coal field the present, buries shallowly, on the duplicate thick loose sand bed is the mining area coal bed typical characteristic.

  神府东胜矿区是目前我国探明储量最大的煤田,埋藏浅、上覆厚松散沙层是神东矿区煤层的典型赋存特征。

  参考来源 - 浅埋煤层长壁开采顶板结构稳定性分析

·2,447,543篇论文数据，部分数据来源于NoteExpress