IEC 60148:1969 EN-FR 272bda67
Letter symbols for semiconductor devices and integrated microcircuits
被代替
发布日期 :
1969-01-01
实施日期 :
AS 1101.1-1993
Graphic symbols for general engineering Hydraulic and pneumatic systems
现行
发布日期 :
1993-05-17
实施日期 :