outburst coal

英 美
  • 突出煤层
  • coal n.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
  • outburst n.爆发;突发;(感情)迸发
    1. Grave protrusion coal seam tunnelling hydraulic cutting protrusion-dispelling measures is a new technology in the world.
      严重突出煤层掘进水力掏槽防突措施在国际上是一种防突新技术。