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 library, and requirements for their interchange (IEC 81714-2:2006); German version EN 81714-2:2007
产品技术文件中使用的图形符号的设计.第2部分:计算机可识别形式的图形符号规范 包括参考图书馆的图形符号及其交换要求(IEC 81714-2-2006);德文版EN 81714-2:2007