“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	weighting material weighting matrix weighting method weighting of observation weight-in-motion weight inspection of raw silk weight inverse matrix weight lattice weightless weightless aircraft weightlessness weightlessness induced bone loss weightlessness-induced muscle atrophy weightlessness physiological effect weightlessness physiological effects countermeasures weightlessness simulation training water tank weightlifting weightlifting ground weight loss weight loss function of health food weight loss in elderly weight loss test weight lowering operator weight method weight module

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