20.Potential for quality and usability improvement through production

所属栏目：英汉烟草科技

The characteristics of cigarette smoke are functions of the physicaland chemical properties of the leaf tobacco that makes up the cigarette.Smoke constituents,therefore,may be modified by changing leaf characteristics. Production techniques have demonstra ......（本文共 3932 字 ）     [阅读本文] >>


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