coal seam meaning in English
煤层。
Examples
- Coal seams intermixed with iron ore .
煤层和铁矿混杂在一起。 - The thicker coal seams are located in a 10-15 km wide belt along which the channel meanders .
较厚的煤层位于河道发生弯曲的、宽10-15公里的地带内。 - Mining high gas coal seam with enclosed mining method
封闭式采煤法开采高瓦斯煤层 - Features of steep coal seam and its mining technology
急倾斜煤层的特点及采煤工艺 - Construction technique of deep - drill of outburst coal seam
突出煤层深钻孔施工技术