GB/T 16901.2-2013

Rules for design of graphical symbols for use in the technical documentation―Part 2: Specification for graphical symbols in a computer sensible form, including graphical symbols for a reference library，and requirements for their interchange

技术文件用图形符号表示规则 第2部分：图形符号(包括基准符号库中的图形符号）的计算机电子文件格式规范及其交换要求