hard segment短语¹⁴⁴⁹⁷²⁺² 基本例句 硬链段 The series of ethylene oxide- ethylene terephthalate segmented copolymers EOET with different long soft segments and different hard segment contents were synthesized. 用两步法合成了对苯二甲酸乙二酯-环氧乙烷 EOET多嵌段共聚物，并研究了软硬链段的结晶特性。 dictall