“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	half-turn half-value discharge time half-value discharging time half value layer half-value layer half-value layer (HVL) half-wave antenna half-wave dipole half-wave filter half wave loss half-wave loss half-wave oscillator half wave plate half-wave plate half wave potential half-wave potential half-wave rectifier half-wave reflection half wave voltage half-wave voltage halfway house half webbed half width half-width half width at half maximum

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