vinylidene chloride短语¹⁴⁴⁹⁷²⁺² 基本例句 乙烯叉二氯,偏二氯乙烯 Vinylidene chloride polymer resin composition and crystallinity influence on the copolymer characteristics were discussed, improving methods of latex performance were introduced. 讨论了偏氯乙烯共聚物组成和结晶性等对其共聚物特性的影响，介绍了胶乳性能的改善方法。 chemyq