Home / Standards / GB/T 12646-1990 GB/T 12646-1990 Active Numerical control of machines--NC processor input--Basic part program reference language 数字控制机床的数控处理程序输入 基本零件源程序参考语言 Standard Type GBT ICS 25.040.20 CCS L74 Status 现行 Issue Date 1990-12-28 Implementation 1991-10-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A