coal outburst
短语词组
- coal seams outburst risk 煤层突出危险性
- coal gas outburst 煤与瓦斯突出
- coal and outburst 煤与瓦斯突出
- coal in outburst zone 突出区煤
- coal seam outburst hazard 煤层突出危险性
- coal -outburst 煤突出
- coal seam outburst 煤层突出
- risks of coal seam outburst 煤层突出危险性
- coal and gas outburst 煤与瓦斯突出;瓦斯突出;煤与;煤与瓦斯 返回 coal outburst