IEC 60268-21:2018 EN-FR 4fdeb9db
Sound system equipment - Part 21: Acoustical (output-based) measurements
现行
发布日期 :
2018-11-07
实施日期 :
ISO/IEC/IEEE 32430:2021 EN e20fe4b0
Software engineering - Trial use standard for software non-functional sizing measurements
REVISED
发布日期 :
2021-10-12
实施日期 :
IEC 62496-2-1:2011 EN-FR d8b1e6c5
Optical circuit boards - Part 2-1: Measurements - Optical attenuation and isolation
现行
发布日期 :
2011-07-28
实施日期 :