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切割
释义
切割
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采掘关系
释
cutting
切割
地下采矿中,在已完成开拓和采准工程的矿块里,为获得备采矿量而开辟的自由面和自由空间(拉底和切割槽),并提供大规模回采矿石爆破和放矿空间所必须完成的井巷工程。
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polymer impregnation and pyrolysis technology of ceramic matrix composites
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