wood coal

名词 wood coal:

1. intermediate between peat and bituminous coal
   同义词：lignite, brown coal
2. a carbonaceous material obtained by heating wood or other organic matter in the absence of air
   同义词：charcoal

1. A material such as wood, coal, gas, or oil burned to produce heat or power.
   燃烧剂木头、煤、天然气、石油等燃烧生热并且产生能量的物质