“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	urea herbicide urea phosphate Ureaplasma urealyticum infection urea poisoning urea prilling tower urea resin urease urediniospore uredinium urediospore uredium uredosorus uredospore uredostage ureilite urelement Urengoy-Uzhhorod Gas Pipeline ureogenesis uresis ureter ureteralgia ureteral injuries ureteral stricture ureteral tuberculosis ureteric orifice

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