effective gas drainage radius的意思|示意
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有效瓦斯抽放半径
effective gas drainage radius的网络常见释义
有效抽采半径 ...有效抽采半径; 抽采负压; 数值模拟 [gap=632]Key words: gas extraction; drill hole along coal seam; effective gas drainage radius; drainage negative - pressure; numerical simulation ..