潘北煤矿正在建设并即将投产，对首采区和首采煤层的开采地质条件进行研究具有意义。

Panbei Coalmine is in construction, so it is with significance to study the geological condition.

youdao

潘北煤矿正在建设并即将投产，对首采区和首采煤层的开采地质条件进行研究具有意义。

Panbei Coalmine is in construction, so it is with significance to study the geological condition.

youdao