Map symbol with fine quality is the precondition that enrich map content, tone up the legibility of map, convenient for editing of map.
高质量的地图符号是丰富地图内容、增强地图的易读性和便于地图编绘的必要前提。
2
The symbol expressing, operating, constituting and editing methods of conceptual parts are discussed, visually editing of product functions during conceptual design is realized.