주파수 제어와 선택용 압전 세라믹 공진자와 공진자 소자
频率控制和选择用压电陶瓷谐振器和谐振器单元.第一章:标准值和条件.第二章:测量和试验条件
2018-11-08
IEC 60642-1979
Piezoelectric ceramic resonators and resonator units for frequency control and selection - Chapter I: Standard values and conditions - Chapter II: Measuring and test conditions
用于频率控制和选择的压电陶瓷谐振器和谐振器单元 - 第一章:标准值和条件 - 第二章:测量和测试条件
1979-01-01
DIN IEC 60642
Piezoelectric ceramic resonators and resonator units for frequency control and selection; standard values and conditions; measuring and test conditions; identical with IEC 60642, edition 1979
用于频率控制和选择的压电陶瓷谐振器和谐振器单元；标准值和条件；测量和测试条件；与1979年版IEC 60642相同
1988-04-01
IEC 60642-1979/AMD1-1992
Amendment 1 - Piezoelectric ceramic resonators and resonator units for frequency control and selection - Chapter I: Standard values and conditions - Chapter II: Measuring and test conditions
修改件1.频率控制和选择用压电陶瓷谐振器和谐振器单元.第1章:标准值和条件.第2章:测量和试验条件