“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	data backup data backup recovery design database database access rights Database and Collections of Information Misappropriation Act database application analysis database application architecture database application development tools database application programming interface database application programming interface, DBAPI database as a service database as a service, DaaS database audit database computer database conceptual structure design database consistency Database data authenticity verification database, DB database debugging and maintenance database design database design documentation normalization database design method database design tools database development and applied management system of museum collection restoration database development and applied management system of museum collection storage

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