The potential correlation between mercury and Chaoite in Alberta sub-bituminous coal was found.

发现了亚烟煤中汞与潮煤的潜在相关关系。

Of or relating to bituminous coal.

无烟煤的或似无烟煤的。

Qinghai Xining bituminous coal price?

青海西宁烟煤的价格？

What can we do with the bituminous coal?

这些烟煤可以用来做什么？

General bituminous coal mining; Motor freight.

一般烟煤开采；汽车货运。