APP A synthetic fiberthat consists of a copolymer of 1-cya-noethene (acrylonitrile,vinyl cyanide) andethenyl ethanoate (vinyl acetate). 由1-腈基乙烯(丙烯腈,乙烯基腈)和乙烯基乙基酯(乙烯基乙酸酯)的共聚物組成的合成纖維。......（本文共 161 字） [閱讀本文] >>
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A synthetic fiberthat consists of a copolymer of 1-cya-noethene (acrylonitrile,vinyl cyanide) andethenyl ethanoate (vinyl acetate). 由1-腈基乙烯(丙烯腈,乙烯基腈)和乙烯基乙基酯(乙烯基乙酸酯)的共聚物組成的合成纖維。......（本文共 161 字） [閱讀本文] >>
