Home / Standards / GB/T 15049.2-1994 GB/T 15049.2-1994 Abolished CAD standard parts file--Specification of geometry and parameters--Elements of geometry class A CAD标准件图形文件 几何图形和特性规范 A类图形构件 Standard Type GBT ICS N/A CCS A40 Status Abolished Issue Date 1994-05-06 Implementation 1994-12-01 Centralized Committee 中国机械工业联合会 Issuing Authority 中国机械工业联合会