Home / Standards / GB/T 39774-2021 GB/T 39774-2021 Active Basic functions and technical requirements for navigation application software 导航应用软件基本功能及技术要求 Standard Type GBT ICS 07.040; CCS A75 Status 现行 Issue Date 2021-04-30 Implementation 2021-04-30 Responsible Dept 自然资源部(测绘地理) Drafting Unit N/A