KS C IEC 81714-2-2011(2016) 产品技术文件用图形符号的设计第2部分:计算机可识别形式的图形符号规范 包括参考库用图形符号及其互换要求
Design of graphical symbols for use in the technical documentation of products-Part 2:Specification for graphical symbols in a computer sensible form, including graphical symbols for a reference libra