“surface and underground combined mining”的概念、定义、翻译、参考文献-科学参考

单词	surface and underground combined mining
释义	surface and underground combined mining Encyclopedia 工学露天与地下联合开采释 surface and underground combined mining露天与地下联合开采在同一矿床范围内，既有露天开采又有地下开采，且二者在时间和空间上形成一个有机整体的开采方式。
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