知识贝壳
知识贝壳
所属栏目：制革专业英语
Practical unhairing systems are mainly based on the use of sulfide or enzyme as sharpening agents. The sulphide unhairing methods and enzyme unhairing methods are used in almost all the processes of leather manufacture.2.1 Sulphide UnhairingLime-sulphide ......（本文共 10606 字 , 1 张图） [阅读本文] >>