The choice of mineral deposit development program is of importance to the underground exploitation.

矿床开拓方案的选择对地下矿床开采具有特别重要的意义。

youdao

The choice of mineral deposit development program is of importance to the underground exploitation.

矿床开拓方案的选择对地下矿床开采具有特别重要的意义。

youdao