IEC 49/569/CDV-2002 率控制和选择用压电器件和介质装置.词汇.第1部分:压电和介质谐振器iezoelectric and dielectric devices for frequency control and selection - Glossary - Part 1: Piezoelectric and dielectric resonators IEC 60027-1 AMD 1-1997 电气技术用字母符号.第1部分:通则.修改件1
iezoelectric and dielectric devices for frequency control and selection - Glossary - Part 1: Piezoelectric and dielectric resonators
IEC 60027-1 AMD 1-1997 电气技术用字母符号.第1部分:通则.修改件1
etter symbols to be used in electrical technology - Part 1: General; Amendment 1
