Through orthogonal test,chrome-free tanning technology of goatskin shoe upper leather with chrome-free tanning agents such as modified glutaraldehyde,modified vegetable tannin and syntans was studied.是什么意思_Through orthogonal test,chrome-free tanning technology of goatskin shoe upper leather with chrome-free tanning agents such as modified glutaraldehyde,modified vegetable tannin and syntans was studied.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句