“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	Age of Red Age of sail age of the earth age of the Galaxy age of the moon age of the universe ageostrophic ageotropic ageotropism AGEP age-period-cohort analysis age problem ager ageratum conyzoides age-related macular degeneration age-replacement policy age scale age-specific fertility rate Age spectrum age standardization age stratification theory age structure age structure of population AG focused accelerator Aggadah

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