13.Aging and fermentation
工业科技

        Freshly cured tobacco leaf is unfit for use because of its pungent andirritating smoke. By the process of fermentation and aging,the leaf delivers mild and aromatic smoke. Aging is generally applied to cigarettetobacco,i. e.,a mild state of fermentation,u......（本文共 2968 字）     [阅读本文] >>