... slope pillar 倾斜矿柱 slope sinking 斜井掘进 slope stake 坡度标桩 ...
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... 斜井开拓 opening up by inclined shafts; openingupbyinclinedshafts 斜井开挖 slope driving; slope sinking 钻井开支 drilling expenditure ...
基于1个网页-相关网页
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