“undercutting level”的概念、定义、翻译、参考文献-科学参考

单词	undercutting level
释义	undercutting level Encyclopedia 工学开拓工程释 undercutting level拉底水平为地下矿山回采工作开辟底部自由面，由拉底巷道向两侧扩帮，将矿房底面拉开至足够大，补充爆破空间或者为应力作用下矿石自然崩落创造条件而进行开挖的作业水平。
随便看	La muette de Portici Lamu Islands Lamu Museum Lamut Lamy Lam Yanta Lamé Lamé coefficients Lamé constants Lamé crater Lamé curve Lamé differential equation Lamé function Lamé function of the first kind Lamé function of the second kind Lamé oval Lamé solution Lamé theorem LAN Lana lanaria family Lancang Jiang Meili Daxiagu Lancang Lahuzu Zizhixian Lancang-Meikong Cooperation Leaders'Meeting Lancang-Mekong Integrated Law Enforcement and Security Cooperation Center

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