Home / Standards / GB/T 19763-2005 GB/T 19763-2005 Active Guide to the use of preferred numbers and of series of preferred numbers 优先数和优先数系的应用指南 Standard Type GBT ICS 17.020 CCS A20 Status 现行 Issue Date 2005-05-16 Implementation 2005-12-01 Responsible Dept 国家标准委 Drafting Unit N/A