“open stope mining method”的概念、定义、翻译、参考文献-科学参考

单词	open stope mining method
释义	open stope mining method Encyclopedia 工学空场采矿法释 open stope mining method空场采矿法在回采过程中将矿块划分为矿房和矿柱，分两步骤回采，在回采矿房过程中采场以敞空方式存在，主要靠矿岩本身强度和矿柱支撑能力维护采场稳定性的采矿方法。又称自然支护采矿法。
随便看	free automaton free automorphism free available chlorine free band free basis free bivector free Boolean algebra free-bound absorption free boundary free boundary flow free boundary problem free boundary-value problem free-bound continuous spectrum free bound continuum free-bound continuum free-bound emission free bound transition free-bound transition free calculus free captive animals free carrier free carrier absorption free cash flow for the firm model free cash flow hypothesis free cash flow of equity model

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