Home / Standards / GB/T 4685-2007 GB/T 4685-2007 Active External cylindrical grinding machines - Testing of the accuracy 外圆磨床 精度检验 Standard Type GBT ICS 25.080.50 CCS J55 Status 现行 Issue Date 2007-07-26 Implementation 2007-12-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A