Home / Standards / GB/T 7400.7-1987 GB/T 7400.7-1987 Abolished Broadcasting and televisionterminology--Television broadcasting--Visual and picture quality 广播电视名词术语 电视广播 视觉与图象质量 Standard Type GBT ICS 33.020 CCS M04 Status 废止 Issue Date 1987-03-12 Implementation 1987-11-01 Responsible Dept 广电总局 Drafting Unit N/A