“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	ecocriticism eco-culture eco-cybernetics of complex ecosystem eco-design ecodesign eco-dredging eco-dynamics of complex ecosystem eco-economic groups of grassland plants eco-efficiency eco-engineering of artificial reefs eco-engineering of fish passage eco-environmental disaster eco-environmental quality assessment eco-environment big data eco-environment map eco-environment protection textile design eco-epidemiology eco-ethics ecofactor ecofeminism eco-feminist theology eco-friendly dye ecogenesis ecogenetics ecogenomics

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