It introduces particularly three models: city basic geographical information government affair platform, theme exploration and survey information service platform, and navigation location service.

介绍了城市基础地理信息政务平台、专题勘测信息公众服务平台和导航位置服务三种服务模式。

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Position measuring instrument and method, navigation instrument and method, information service and audio-frequency information transmit-receive method.

位置测量仪器和方法，导航仪器和方法，信息服务及声频信息收发方法。

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With digital group, satellite navigation, geographic information service and other functions provided by satellite communication, it achieved mobile emergency communication transmission on wheels.

以卫星通信为支撑集成数字集群、卫星导航和地理信息服务等功能，实现了车载机动应急通信传输。

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The detachable unit consists of a 3.5-inch LCD which gets its navigation information from an SD card, and if you opt for TomTom's optional service package it'll provide real time traffic info as well.

ENGADGET: Eclipse's AVN 2210p apes TomTom One's portable style