Home / Standards / GB/T 21012-2007 GB/T 21012-2007 Active Precision machining centers - Specifications 精密加工中心 技术条件 Standard Type GBT ICS 25.040.10 CCS J54 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