“downward drift stoping with backfill”的概念、定义、翻译、参考文献-科学参考

单词	downward drift stoping with backfill
释义	downward drift stoping with backfill Encyclopedia 工学上向分层充填采矿法释 downward drift stoping with backfill下向进路充填法将矿块沿竖直方向划分为若干分层，由上而下逐层以巷道进路的方式进行回采并充填的采矿方法。
随便看	printing photographic materials printing plate printing plates printing press or duplicating unit printing pressure printing process control systems printing project of Tripitaka printing quality control printing remuneration Printing Sleeve Printing Society of China printing technique Printing Technology printing technology printing textile printing theodolite printing typeface printing viscosity index，PVI print media print of seal print quality print quality certification print server prints of Ming and Qing Dynasties prints of Song Dynasty

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