碳氢化合物的沉淀，如石油、煤、天然气等，由古代生物衍生而成，经过开发后用作燃料。
A hydrocarbon deposit, such as petroleum, coal, or natural gas, derived from living matter of a previous geologic time and used for fuel.
从煤分子结构出发，煤的反应性可以用芳香环，氢化芳香环，烷烃链、烷烃键和含氧官能团的变化来描述。
From molecule structure of coal, coal reaction character was described by aromatic ring, hydrogenation aromatic ring, alkane, alkane bond, oxy-group.
在含硫量为3 14%的无烟煤中添加石灰(固硫剂)及少量碳氢化合物(助燃剂)，制作成型煤。
Coal briquette is made of anthracite with a sulfur content of 3 14% by addition of lime (as sulfur fixation agent) and hydrocarbons (as combustion adjuvant).
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