“room-and-pillar mining method”的概念、定义、翻译、参考文献-科学参考

单词	room-and-pillar mining method
释义	room-and-pillar mining method Encyclopedia 工学房柱采矿法释 room-and-pillar mining method房柱采矿法矿房回采过程中靠围岩和留下的规则连续矿柱或间柱来维护采场稳定性的空场采矿法。简称房柱法。
随便看	step utilization step voltage step water price step width stepwise stepwise addition polymerization stepwise adsorption stepwise approximation stepwise clustering stepwise constructed calculus stepwise construction of the solution stepwise decomposition stepwise development stepwise dilution stepwise discriminant stepwise dissociation stepwise distillation stepwise excitation stepwise formation constant stepwise hydrolysis stepwise ionization stepwise line atomic fluorescence stepwise-line atomic fluorescence stepwise line fluorescence stepwise multiple linear regression

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