pitch coal
... 星状沥青煤 stellarite 沥青煤,烟煤 pitch coal 高沥青煤 high bituminous coal ...
bituminous coal
... bitumen地沥青 bituminous coal沥青煤 black body黑体 ...
asphalt coal
... 沥青焦pitch coke 沥青煤asphalt coal 沥铸法slush casting ...
glance coal
... glam 内陆淡水沼泽 glance coal 亮煤;沥青煤 glance pitch 辉沥青 ...