Home / Standards / GB/T 4684-1994 GB/T 4684-1994 Abolished External cylindrical grinding machines--Parameters 外圆磨床 参数 Standard Type GBT ICS 25.080.50 CCS J55 Status 废止 Issue Date 1994-12-20 Implementation 1995-09-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A