UNE-EN 81714-2:2000
产品技术文档中使用的设计图形符号 第2部分：计算机可感知形式的图形符号规范（包括参考库的图形符号）及其交换要求
DESIGN 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