
Plastics - Symbols and abbreviated terms Part 1: Basic polymers and their special characteristics - Amendment 1: New symbol ST for syndiotactic
出版:International Organization for Standardization

專家解讀視頻
Plastics - Symbols and abbreviated terms Part 1: Basic polymers and their special characteristics - Amendment 1: New symbol ST for syndiotactic
出版:International Organization for Standardization
專家解讀視頻