GB/T 28433-2012.Technical requirements for single frequency network of digital t...

国家标准2023.07.28

GB/T 14197-2012/IEC 61938: 1996.Preferred matching values for the interconnectio...

国家标准2023.07.28

GB/T 14001-2012.Time and control code for SDTV video tape recording.GB/T 14001规定...

国家标准2023.07.28

GB/T 13187-2012.Magnetic tape sound recording and reproducing systems-General co...

国家标准2023.07.28

GB/T 28435-2012.Technical specifications and methods of measurement for digital...

国家标准2023.07.28

GB/T 28436-2012.Technical requirements and measurement methods of digital terres...

国家标准2023.07.28

GB/T 28437-2012.Technical specifications of monitoring for digital terrestrial t...

国家标准2023.07.28

GB/T 14858-2011.General specification for black white monitors.GB/T 14858规定了黑白监视...

国家标准2023.07.28

GB/T 12060.9-2011.Sound system equipment- Part 9: Methods of measurement for art...

国家标准2023.07.28

GB/T 12060. 13-2011/IEC/TR 60268- 13: 1998.Sound system equipment- -Part 13 : Li...

国家标准2023.07.28