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生物燃料，固体，液体或气体燃料产生的生物量被认为是非常好的的化学燃料的替代品，因为它们燃烧时产生碳中性二氧化碳。 当今市场上大多数得生物乙醇和生物柴油等生物燃料是经含有碳14的光合植物处理而成的。http://www.betalabservices.com/landings/biobased/images/test_results_icon@2x.png