through coal seam的意思|示意
穿过煤层
through coal seam的网络常见释义
施工 浅谈隧道瓦斯段揭煤防突施工技术-经济管理论文-下载论文网 关键词：隧道；瓦斯；揭煤防突；施工 Abstract: G [gap=450]Key words: tunnel; gas; through coal seam; construction
through coal seam相关短语
1、 cut through coal seam 揭煤
2、 cutting through coal seam 揭煤
3、 tunnel through the coal seam 穿煤隧道