短语词组短语vinyl isobutyl ether polymers 乙烯基异丁基迷聚体vinyl isobutyl ether polymer 乙烯基异丁基醚聚合物vinyl chloride -isobutyl vinyl ether copolymer 氯乙烯isobutyl vinyl ether 乙烯基异丁醚;乙烯基异丁基醚;异丁基乙烯基醚;异丁氧基乙烯 返回 vinyl isobutyl ether