With the use of GPS, the running characteristics of Shanghai buses were investigated, meanwhile, one typical in-use diesel bus was selected to do on-road emission tests with the use of SEMTECH-D.

利用GPS和SEMTECH-D车载排放测试仪测量了上海市公交车行驶工况和公交柴油车在市区道路上的排放状况。

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The 4-d earth deformation monitoring network was sep up in North China by using GPS technology.

应用GPS技术在华北布设了一个四维地形变监测网。

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Engineers use the tools to conduct 3-D electromagnetic simulations and RF circuit simulation for antenna, GPS, and various wireless design applications.

工程师可以使用工具来进行天线，全球定位系统，以及各种无线应用的3 - D电磁模拟和RF电路仿真。

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"The opportunity to deliver these same services is already there with the existing GPS, " says Mike Swiek, executive director of the U.S. GPS Industry Council in Washington, D.

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They're slick and have solid GPS features, as you'd expect.

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Despite the advent of GPS, radar technology and 3-D computer software, an exquisitely hand-drawn map and carefully collected data often can outdo what a couple of whiz kids can find on a laptop.

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