“spontaneous caving method”的概念、定义、翻译、参考文献-科学参考

单词	spontaneous caving method
释义	spontaneous caving method Encyclopedia 工学阶段崩落采矿法释 spontaneous caving method自然崩落采矿法在位于阶段水平矿块的底部开展大面积的拉底，在侧部用巷道和深孔爆破切帮后，矿石在阶段的整个高度上借自重与地压作用逐渐使矿石自然崩落并破碎成适当块度的采矿方法。
随便看	youths living on the elders youth sport club youth sports youthsstaying in the house and indulging in the internet youth's wear Youth Truth youth violence youth volunteer activity Youtian Xihai Shi Yayan Youwenshuo youwen theory You Who Came from the Stars You Xian Youxian County Museum（Tan Zhenlin's Life And Achievements Exhibition Hall） Youxian Guchui Youxian partridge duck Youxian Qu You Xiaogang You Xiaozeng Youxi Xian You Ya Youyang ancient song YouYang Tujiazu Miaozu Zizhixian Youyang Zazu Youyi Feng

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