coal mining under water-bodies的意思|示意
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英 / /
在水体下采煤
coal mining under water-bodies的网络常见释义
水体下采煤 ...水体下采煤；厚煤层；透水危险性；综放开采；导水裂隙带；熵权-层次分析法 [gap=1269]Keywords : coal mining under water-bodies；thick coal seam；hazard of water inrush；full mechanized mining；water flowing fra..