Based on introducing the aesthetics of the homepage design, this paper expounds the visual design principle in the homepage design from the Angle of the visual communication.

在介绍网页设计审美需求的基础上，从视觉传达的角度阐述了网页设计中的视觉设计原则。

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According to the design principle of the map symbol, design the travel map symbol and visual function, the scheme of the symbol data store reference and network performance.

根据地图符号的设计原则，设计旅游地图符号及可视化功能，旅游符号数据存储和索引方案及网络性能优化方案。

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Based on the analysis of system structure and working principle, the design of the visual position subsystem, upper control subsystem, executing structure subsystem has been carried out.

在分析系统结构及工作原理的基础上，提出了视觉定位系统、上位控制系统、执行机构等各分系统的设计。

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