知识贝壳
知识贝壳
所属栏目：制革专业英语
Chrome leathers are dyed either discontinuously in drums or continuously on the machines(through-feed dyeing,spray dyeing or dyeing by roller coating). When they are dyed in drums,it is usually carried out during the processes of retanning and fatliquroin ......（本文共 11845 字 , 1 张图） [阅读本文] >>