字体和符号模板 基本要求、识别标记及槽宽尺寸
Templates for lettering and symbols--General principles,identification markings and the size of the slotwidths
标准状态
发布于:1997-08-26
实施于:1998-05-01
已废止
Templates for lettering and symbols--General principles,identification markings and the size of the slotwidths