modifier是什么意思？

modifier

例句

• Acrylic resin ( ACR ), as an impact modifier for R - PVC , was synthesized by latex interpenetrating network technique. 采用乳液聚合技术合成了硬聚氯乙烯(R-PVC)抗冲击改性剂丙烯酸酯类聚合物 ( ACR ).
• Acrylic resin ( ACR ), as an impact modifier for R - PVC, was synthesized by latex interpenetrating poly - mer network technique. 采用乳液聚合技术合成了硬聚氯乙烯(R - PVC)抗冲击改性剂丙烯酸酯类聚合物 ( ACR ).
• Major Composite of thc SeaIant is bisphenol A epoxy resin, dicyandiamide, ureido compound and modifier etc. 以双酚A环氧树脂 、 双氰胺 、 脉及改性材料为主要成分配制的胶粘剂可在中温迅速固化.
• It can serve as subject, predicate, object, attribute and adverbial modifier. 可以作主语 、 谓语 、 宾语 、 定语、状语.