maleic anhydride短语⁸⁴³²⁰⁺⁸ 基本例句 顺丁烯二酐,马来酸酐 Endomethylene tetrahydrophthalic anhydride was obtained by the reaction of cyclopentadiene and maleic anhydride, and used instead of o-phthalic anhydride in preparation of unsaturated polyester resin. 用环戊二烯和顺丁烯二酸酐合成桥亚甲基四氢化苯酐，利用它代替邻苯二甲酸酐合成了不饱和聚酯。 chemyq