Among them , sea - island structure flexibilizer had good synthetical properties.相比较而言,端环氧基聚氨酯醚海岛结构增韧剂的综合性能较好....

软化剂，增韧剂...

flexibilizer的音标：flexibilizer的英式发音音标为：[f'leksəbɪlaɪzər]flexibilizer的美式发音音标为：[f'leksəbɪlaɪzər]...