“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	zero-dimensional-defect zero-dimensionality zero-dimensional manifold zero-dimensional mapping zero-dimensional network solid zero-dimensional set zero-dimensional space zero-dimensional sphere zero-dimensional system zero dimension inorganic nanomaterials zero dimension semiconductor zero-dimension semiconductor zero diopter zero-direction zero dispersion wavelength zero-dispersion wavelength zero distance transfer zero-divergence field zero divisor zero divisor of a module zero divisor of a ring zero divisor of a semigroup zero drift zero drift and temperature drift of sensor zerodur

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