JIS Z8222-2-2006 使用在产品技术文件的图形符号设计.第2部分:计算机可识别形式(包括参考库用图形符号)图形符号用规范和其交换要求
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 library, and requirements for their interchange