Home / Standards / GB/T 7923 GB/T 7923 Abolished Surface grinding machines with vertical grinding wheel spindle and reciprocating table--Parameters 立轴矩台平面磨床 参数 Standard Type GBT ICS 25.080.50 CCS J55 Status 废止 Issue Date 1987-06-11 Implementation 1988-01-01 Responsible Dept N/A Drafting Unit N/A