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矿井漏风系数
meaning in Chinese
coefficient of mine air leakage
Related Words
矿井外部漏风率
矿井通风
矿井冒顶
矿井头
矿井事故
矿井绞车
矿井测量
矿井消防车
死亡矿井
地下矿井
矿井口输运工
矿井漏风率
矿井冒顶
矿井内部漏风率
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