The Map Symbol base System is one of the indispensable base functions in Electronic Map System.

地图符号库系统是电子地图系统中不可缺少的功能模块之一。

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The technique route is studied of renewing of GIS foundation map base, combining with the renewing of foundation map base to the urban geography information center of Changzhou planning bureau.

本文主要结合对常州市规划局城市地理信息中心基础图库的更新，探讨对城市GIS基础图库更新的技术途径。

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We can do that by intercepting our observation with the date base and knowledge we required, the whole color map.

通过截取我的观察结果,分析数据库，所需的知识，以及整个彩色图画。

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World travelers can also add a European or Pacific Rim base map from the installation CD.

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The iQue M5 shows major highways, thoroughfares, railways, lakes, rivers and borders within its built-in base map of North and South America and Puerto Rico.

MSN: Supercharged PDA with GPS really flies

And, that means that we ought to be able draw out a map of that base world which we are all seeing.

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