知识贝壳
知识贝壳
所属栏目：英汉烟草科技
To increase the filling power of tobacco,processes have been developed that consist of impregnating tobacco with volatile materials and thenrapidly removing them. The almost explosive removal of the impregnantexpands the cellular structure of the leaf,giv ......（本文共 1005 字 , 2 张图） [阅读本文] >>