美利体育登录入口官网:IEC 60050-561:1991/AMD2:1997
国际电工词汇.第561章:频率控制和选择用压电器件.第561-07节:表面声波美利体育官网首页网址的特性.修改件2
International Electrotechnical Vocabulary - Chapter 561: Piezoelectric devices for frequency control and selection - Section 561-07: Characteristics of surface acoustic wave (saw) devices; Amendment 2