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Lesson 1 Introduction to processing of base
工業(yè)科技

        4.1.1 The definition and classification of baseThe name is derived from English BASE,which means the substrate,base fabric and semifinished products. The synthetic leather base usually refers to fiber-resin composite which isformed by the impregnating or ......(本文共 7537 字)     [閱讀本文] >>

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