知识贝壳
知识贝壳
所属栏目：制革专业英语
In chrome tannage,pickled pelt is treated with basic chrome sulphate. Each chrome complex molecule reacts with several carboxyl groups of collagen to produce crosslinking between different molecule chains of the collagen. This will strengthen the fiber ne ......（本文共 9989 字 , 2 张图） [阅读本文] >>