Lesson 3 Types of Polymers

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Lesson 3 Types of Polymers
Thelargenumberofnaturalandsyntheticpolymershasbeenclassifiedinseveralways.Thesewillbeoutlinedbelow.Theearliestdistinctionbetweentypesofpolymerswasmadelongbeforeanyconcreteknowledgeoftheirmolecularstructure.Itwasapurelyphenomenologicaldistinction,basedonth ......     (本文共 8061 字 , 1 张图 )     [阅读本文]>>




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