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

单词	room-and-pillar mining with subsequent backfill
释义	room-and-pillar mining with subsequent backfill Encyclopedia 工学充填采矿法释 room-and-pillar mining with subsequent backfill房柱采矿嗣后充填法用房柱法进行矿石回采，并用充填料一次性充填采空区以支撑围岩，为间柱或周围采场的回采创造条件的采矿方法。
随便看	Olaf Ⅴ Ola Hansson Olancho OLAP olaquindox poisoning Ola Rotimi OLAS olation Olav Duun Olavi Paavolainen Olavo Bilac olax family Olbers crater Olbersia Olbers' method Olbers paradox Olbers' paradox Olcott crater old age old age allowance old-age ethic old age group old-age morality Old-Age Pension of Canada old age poverty

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