Coal gas is produced by the gasification of coal. 煤氣是由煤的氣化作用得到的。
Based on the principle of biomass gasification, the method, updraft gasification in fixed beds, is adopted to study the process of biomass gasification. 摘要根據生物質的氣化原理,利用固定床上吸式氣化的試驗方法,對生物質進行氣化研究。