Google Maps is a key technology in this platform as it provides geographic data for all locations and shows other (related) locations within a certain range of the location in question.

Google Maps是这个平台的一项关键技术，它被用来提供所有地点的地理信息以及用户查找的地点一定范围内的其他(相关)地点的信息。

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Geographic information systems (GIS) provide a method and technology to analyze spatial data, or information about the Earth.

地理信息系统(GIS)提供了分析空间数据或者说是关于地球信息的方法和技术。

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In the case of geographic data access objects, the paper illustrates the geographic data access class realized by oriented-object technology.

地理数据访问对象方面，介绍了采用面向对象技术设计实现的地理数据访问类。

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