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dry backfill
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dry backfill
Encyclopedia
工学
矿山充填
释
dry backfill
干式充填
采用砂、石等散体物料作为充填料充入采场形成非胶结充填的矿山充填方式。
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administration and logistics management department of museum
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administration of archaeological excavation
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administration office building
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administration of large-scale fireworks show
administration of military and civil affairs
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