“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	weakly closed subset weakly -compact weakly compact weakly compact operator weakly compact set weakly compact space weakly comparable functions weakly complemented lattice weakly complemented subspace weakly complete weakly complete manifold weakly complete sequence weakly complete space weakly complex manifold weakly conformal mapping weakly connected weakly connected component weakly connected digraph weakly consistent estimate weakly consistent estimator weakly -continuous weakly continuous weakly continuous function weakly continuous operator weakly continuous representation

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