Poly 2 oxazolidones (POXDN) are prepared with a diisocyanante and an epoxy resin by using quaternary ammonium salts and hydroxy quaternary ammonium salts (162) as catalyzers respectively.是什么意思_Poly 2 oxazolidones (POXDN) are prepared with a diisocyanante and an epoxy resin by using quaternary ammonium salts and hydroxy quaternary ammonium salts (162) as catalyzers respectively.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句