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分段矿房采矿法
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分段矿房采矿法
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空场采矿法
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sublevel stoping mining method
分段矿房采矿法
沿垂直方向将矿块划分为若干分段,每个分段划分为若干矿房和矿柱,各分段采下的矿石分别从该分段的出矿巷道运出,分段矿房回采结束后,可立即回采本分段的矿柱并同时处理采空区的采矿方法。
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beat frequency
beat frequency emitter
beat-frequency interferometer
beat frequency oscillator
beat-frequency oscillator
beat frequency oscillator, BFO
beatiful name of geographical names
beating
beating degree
beating ditch
beating mark
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Beating the Balustrade: The Sophisticated Mentalities of Ancient Dramatists
Beating the Flower Drum
beating the house to cross the heaven river
Beating the Loveless Love
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Beatitudes
Beatles
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Beatrix
beats
beat spectrum
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