“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	ionospheric direct sounding ionospheric disturbance ionospheric disturbances ionospheric dynamo ionospheric dynamo effect ionospheric eclipse ionospheric effect ionospheric HF oblique sounding ionospheric instability ionospheric irregularities ionospheric irregularity ionospheric modification ionospheric parameters ionospheric propagation of ultrashort wave ionospheric radio wave propagation ionospheric refraction ionospheric refraction and radio wave propagation delay ionospheric refraction correction ionospheric region ionospheric satellite ionospheric scintillation ionospheric sounding ionospheric storm ionospheric structure ionospheric topside sounding

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