Measurement of quartz crystal unit parameters - Part 9: Measurement of spurious resonances of piezoelectric crystal units (IEC 60444-9:2007); German version EN 60444-9:2007
石英晶体元件参数的测量.第9部分:压电晶体元件杂散共振的测量（IEC 60444-9-2007）；德文版EN 60444-9:2007

2007-12-01

Measurement of quartz crystal unit parameters by zero phase technique in a -network - Part 1: Basic method for the measurement of resonance frequency and resonance resistance of quartz crystal units by zero phase technique in a -network (IEC 60444-1:1986 + A1:1999); German version EN 60444-1:1997 + A1:1999
度网络中用零相位技术测量石英晶体元件参数.第1部分:度网络中用零相位技术测量石英晶体元件谐振频率和谐振电阻的基本方法（IEC 60444-1-1986+A1-1999）；德语版EN 6

2000-09-01