Home / Standards / GB/T 17421.7-2016 GB/T 17421.7-2016 Active Test code for machine tools—Part 7: Geometric accuracy of axes of rotation 机床检验通则 第7部分:回转轴线的几何精度 Standard Type GBT ICS 25.080.01 CCS J50 Status 现行 Issue Date 2016-04-25 Implementation 2016-11-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A