第二代生物燃料原料改成采用生物量或者从草中提炼的纤维材料、玉米穗轴和干草、树木或者废弃物来提炼乙醇。
The second generation of biofuels converts biomass or cellulosic material from grass, corn cobs and stover, trees or waste into ethanol.
本文对会同10年生和11年生第二代杉木人工林的生物量和生产力进行了测定和研究。
In this paper, the biomass and productivity of 10-year and 11-year old second generation Chinese fir plantation in Huitong County were studied.
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