I UG 三维建模规范 目录 1 范围 .......................................................................................................................................................... 1 2 规范性引用文件 ...................................................................................................................................... 1 3 术语 .......................................................................................................................................................... 1 4 三维建模的原则 ...................................................................................................................................... 3 5 三维建模的精度要求 .............................................................................................................................. 3 5.1 曲线的精度。 .................................................................................................................................... 4 5.2 曲面的精度。 .................................................................................................................................... 4 6 三维建模的通用要求 .............................................................................................................................. 4 6.1 绘图单位 ............................................................................................................................................ 4 6.2 日期格式 ............................................................................................................................................ 4 6.3 图层设置 ............................................................................................................................................ 4 6.4 线型 .................................................................................................................................................... 5 6.5 颜色 ..............................................
