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矿井通风容积效率
meaning in English
volumetric efficiency of mine air
Related Words
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
矿井电梯
矿井通风兑压头
矿井通风静压头
矿井通风速度压头
矿井通风系统
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