IEC 60444-1:1986 EN-FR bb39c7ce
Measurement of quartz crystal unit parameters by zero phase technique in a pi-network - Part 1: Basic method for the measurement of resonance frequency and resonance resistance of quartz crystal units by zero phase technique in a pi-network
现行
发布日期 :
1986-08-15
实施日期 :
IEC 60793-1-33:2001 EN-FR ed4125fb
Optical fibres - Part 1-33: Measurement methods and test procedures - Stress corrosion susceptibility
REVISED
发布日期 :
2001-08-27
实施日期 :