The research plays a positive role in the prevention and control of groundwater problems in coal mining process.

通过本文的研究，为煤矿开采过程中地下水防治起到积极作用。

youdao

The research plays a positive role in the prevention and control of groundwater problems in coal mining process.

通过本文的研究，为煤矿开采过程中地下水防治起到积极作用。

youdao