Home / Standards / GB/T 16900-1997 GB/T 16900-1997 Abolished Rules for the presentation of graphical symbols--General principles 图形符号表示规则 总则 Standard Type GBT ICS 01.080.01 CCS A22 Status 废止 Issue Date 1997-06-27 Implementation 1997-12-01 Responsible Dept 国家标准委 Drafting Unit N/A