Home / Standards / GBT 34890-2017 GBT 34890-2017 Geometrical product specifications — Acceptance and reverification tests for digital photogrammetry coordinate measuring systems 产品几何技术规范 数字摄影三坐标测量系统的验收检测和复检检测 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A