“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	low temperature calorimeter radiation detectors low temperature carbonization low temperature carbonization gas low temperature carbonization of coal low temperature Claus process low temperature coal tar low temperature cofired ceramic dielectric materials low temperature co fired ceramic (LTCC) technology low temperature co-fired ceramic (LTCC) technology low temperature cofired ceramics low temperature co fired ceramic technology low temperature co-fired ceramic technology low temperaturecold storage low temperature combustion low temperature corrosion on the fire side low temperature damage to rice in autumn low-temperature daqu low temperature disasters in China low temperature dyeing low temperature electronics low temperature electronics, cryotronics low-temperature fatigue low temperature Fischer-Tropsch synthesis products low-temperature flare low temperature fluorescence spectrometry

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