coal outburst
短语词组
- coal seams outburst risk 煤層突出危險性
- coal gas outburst 煤與瓦斯突出
- coal and outburst 煤與瓦斯突出
- coal in outburst zone 突出區煤
- coal seam outburst hazard 煤層突出危險性
- coal -outburst 煤突出
- coal seam outburst 煤層突出
- risks of coal seam outburst 煤層突出危險性
- coal and gas outburst 煤與瓦斯突出;瓦斯突出;煤與;煤與瓦斯 返回 coal outburst