以符号Cdaf表示(过去用Cr)。煤中有机质的主要组成元素。煤燃烧时碳是产生热量的重要元素,测定煤中的碳含量是以干燥无灰基为基准。
我们的主要矿物燃料包括——煤,石油和汽油——他们的组成成分都包括碳,它已经在我们的地球积压了数百万年,我们现在将它使用和燃烧,让它快速的归还到大气中。
Our main fossil fuels — coal, petroleum and gasoline — are made up of carbon that has been compressed in the Earth for millions of years and we're now burning and rapidly restoring to the atmosphere.
千万年以来,人类的主要燃料是木头,燃烧木头的过程中,碳和氢的比率是10比1。相比较而言,煤在燃烧过程中这个比率是2比1,而石油的比率则是1比2。
Humanity's main fuel for eons was wood, which has a carbon-to-hydrogen ratio of 10 to 1 when burned; by comparison, that ratio is 2 to 1 for coal and 1 to 2 for oil.
这不可避免地意味着,在中美有关能源的任何双边议程中,洁净煤和碳封存议题占据高位。
This inevitably means that clean coal and carbon sequestration loom large on any bilateral energy agenda.
应用推荐