井筒过煤层施工防治煤与瓦斯突出.rar
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本资料“井筒过煤层施工防治煤与瓦斯突出”由建虎网会员“lv”上传,资料大小:149.27 KB,资料格式:.rar,详情请下载参考。TAG标签:井筒,煤层,瓦斯,防治,施工,Pit shaft crosses coal of coal-bed construction prevention and cure and gas to highlight
