Coal gas is produced by the gasification of coal. 煤气是由煤的气化作用得到的。
Based on the principle of biomass gasification, the method, updraft gasification in fixed beds, is adopted to study the process of biomass gasification. 摘要根据生物质的气化原理,利用固定床上吸式气化的试验方法,对生物质进行气化研究。