探讨了煤炭开发对矿山环境的破坏与治理问题。

This paper discusses the destruction of coal development to mine environment and its treatment countermeasure.

youdao

探讨了煤炭开发对矿山环境的破坏与治理问题。

This paper discusses the destruction of coal development to mine environment and its treatment countermeasure.

youdao