There are intermediate varieties known as cannel coal.有一些中间性的变种,叫做烛煤.He travelled from New York to California via the Panama Cannel.他经由巴拿马运河从纽约到加利福尼亚.Resinite is a rich n 1 aceral in Teriary humic coal, boghead - cannel ...
Cannel coal is dull black.烛煤呈暗黑色.There are intermediate varieties known as cannel coal.有一些中间性的变种,叫做烛煤.He travelled from New York to California via the Panama Cannel.他经由巴拿马运河从纽约到加利福尼亚....