“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	furnace explosion furnace loss of fire furnace process control system furnace-process phosphoric acid furnace safeguard supervisory system furnaces in metallurgical industry furnace spectrum furnace transformer furnace volume heat load of suspension firing boiler furnace wall damage accident furnace wall oxygen lancefor electric arc furnace furnace with low nitrogen oxide burner furniture Furniture China Furniture Design furniture in Song and Yuan Dynasties furniture leather Furniture Management in Chinese Classical Gardens furniture type furocoumarin Furong hybrid Carp Furongian Series Furong Jiang Furong Qu Furong River Scenic and Historic Area

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