重点词汇
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回采
mining; extraction; recovery; coal mining; ore extraction
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损失
lose; suffer a loss; loss; damage; cost
中英释义：
回采损失
时间: 2025-05-12 00:46:47
mining loss
中英释义：
mining loss
回采
mining; extraction; recovery; coal mining; ore extraction
损失
lose; suffer a loss; loss; damage; cost