technical characteristics短语¹⁴⁴⁹⁷²⁺² 基本例句 技术特征 Category groups the technical requirements andtechnical characteristicsof the learning object.范畴包括学习对象的技术需求和技术特征。 The technical features of the methods for reducing olefins in FCC gasoline are presented.并提出了催化裂化汽油降烯烃的方法应该具有的技术特征。