知識貝殼
知識貝殼
所屬欄目：制革專業(yè)英語
Limed hide is a three dimensional network of protein fibers. These fibers have absorbed alkali in the form of lime and other alkaline materials. The skin is a blue-white,swollen,rubberlike,translucent mass. The deliming process,therefore,is one that will ......（本文共 10169 字 ） [閱讀本文] >>