quaternary ammonium polystyrene resin季: season聚苯乙烯树脂: polystyrene resin; styrol re ...聚苯乙烯树脂: polystyrene resin; styrene resins苯乙烯树脂, 聚苯乙烯: styrene resin交联聚苯乙烯树脂: cross linked polystyrene resin; cross-linked pclystyrene resin下载手机词典可随时随地查词查翻译