Home / Standards / GB/T 20256-2019 GB/T 20256-2019 Active Specifications for the gravimetry control 国家重力控制测量规范 Standard Type GBT ICS 07.040 CCS A76 Status 现行 Issue Date 2019-03-25 Implementation 2019-10-01 Responsible Dept 自然资源部(测绘地理) Drafting Unit N/A