The research used the diethylen etriamine as the catalyst, the dibutyl(o-)phthalate as the toughening agent and the optimal dosage is 1%.是什么意思_The research used the diethylen etriamine as the catalyst, the dibutyl(o-)phthalate as the toughening agent and the optimal dosage is 1%.在线翻译_英语_读音_用法_例句