This paper presents the concept of surface-underground combined mining method and discusses the difference from combined open-pit and underground mining.
阐述了露天-地下联合采矿法的概念及其与传统的露天-地下联合开采的区别。
This paper presents the concept of surface-underground combined mining method and discusses the difference from combined open-pit and underground mining.
阐述了露天-地下联合采矿法的概念及其与传统的露天-地下联合开采的区别。
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