cannel shale [地质] 烛煤页岩 ; 粗油页岩 ; 腐植页岩
Boghead Cannel 沼油页岩 ; 藻烛煤
cannel test 成沟试验
semi-cannel coal 瘦烛煤
boghead cannel shale [地质] 沼油页岩
cannel boghead 烛藻煤
boghead-cannel 藻烛煤
N a dull coal having a high volatile content and burning with a smoky luminous flame 烛煤
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