研究数值模拟在露天转地下过渡期开采矿山的应用，是一项很有价值的工作。

The Study of the application of numerical simulation in the mining of transition period is of great value.

youdao

研究数值模拟在露天转地下过渡期开采矿山的应用，是一项很有价值的工作。

The Study of the application of numerical simulation in the mining of transition period is of great value.

youdao