Home / Standards / GB/T 17421.1-1998 GB/T 17421.1-1998 Abolished Test code for machine tools--Part 1:Geometric accuracy of machines operating under no-loador finishing conditions 机床检验通则 第1部分:在无负荷或精加工条件下机床的几何精度 Standard Type GBT ICS 25-010 CCS J50 Status 废止 Issue Date 1998-07-02 Implementation 1999-05-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A