Home / Standards / GB/T 12177-1990 GB/T 12177-1990 Abolished Numerical control of machines--NC processor output--Logical structure 数字控制机床的数控处理程序输出 逻辑结构 Standard Type GBT ICS 25.040.20 CCS L74 Status 废止 Issue Date 1990-01-04 Implementation 1990-08-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A