1·The second generation of biofuels converts biomass or cellulosic material from grass, corn cobs and stover, trees or waste into ethanol.
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。
2·These projects will demonstrate the thermochemical conversion process of turning grasses, stover, the non-edible portion of crops and other materials into biofuel.
这些计划将用实验论证热化学转化过程，即将稻科植物类、干草、农作物不可食用部分以及其它材料转化为生物燃料的过程。