The western coal resources exploitation and utilization should adopt the advances reasonable plan and countermeasures.

提出西部煤炭的开发利用必须采用先进合理的规划、布局和措施。

youdao

The western coal resources exploitation and utilization should adopt the advances reasonable plan and countermeasures.

提出西部煤炭的开发利用必须采用先进合理的规划、布局和措施。

youdao