“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	compact embedding compact extension compact extragalactic radio source compact family compact fiber compact flare compact fluorescent lamp compact foliation compact form compact galaxy compact galaxy nucleus compact grain compact group compact group of galaxies compact Hausdorff space compact heat exchanger compact homotopy class compact HⅡ region compactifiable compactification compactification operator compactification theorem compactified space compactifying compactifying distribution

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