“transition from underground mining to surface mining”的概念、定义、翻译、参考文献-科学参考

单词	transition from underground mining to surface mining
释义	transition from underground mining to surface mining Encyclopedia 工学露天与地下联合开采释 transition from underground mining to surface mining地下转露天开采前期用地下开采矿床下部矿体，后期过渡到用露天开采矿床上部矿体的开采方式。
随便看	motor proportional controller motor protection motor protein motor pulse width modulation motor redundancy control motor relearning motor resonance point motor running torque frequency characteristics motor sampling control system motor signal sampling motor simulation motor skill motor skill learning motor skill training motor speech disorders motor starting current motor starting torque motor stray loss motor symbolism motor system Motor Theory of Speech Perception motor torque characteristics motor torque coefficient motor transfer motor transient signal analysis

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