知识贝壳
知识贝壳
所属栏目：制革专业英语
After chrome tanning it is common to allow excess chrome liquor to drain off the wet-blue,and to stand them in a damp condition for a day or more. Further fixation of chrome and setting of the wet-blue fibers occur. Where a flat leather is required,the we ......（本文共 11336 字 , 3 张图） [阅读本文] >>