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矿山井巷
释义
矿山井巷
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矿山井巷
释
mine shaft and drift
矿山井巷
为采矿提升、运输、通风、排水、动力供应等维持矿山正常生产需要而掘进的通道和空间。
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更新时间:2026/7/26 5:06:11