After optimization of deep mining boundary, mining activities become reasonable thus achieving good economic benefit.

通过对境界优化后，可使采场的开采更趋于合理，经济效益十分显著。

youdao

After optimization of deep mining boundary, mining activities become reasonable thus achieving good economic benefit.

通过对境界优化后，可使采场的开采更趋于合理，经济效益十分显著。

youdao