Now that we have PDA GPS technology, more people can avoid having to stop and ask for directions.

现在我们有了掌上电脑的GPS技术，越来越多的人可不必停止，并要求方向。

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Be Responsible For your time: Make sure that you have the tools to manage your time properly - a calendar, PDA, and GPS are critical.

为你自己的时间负责：保证你有合理管理时间的工具，日历、PDA和GPS都很重要。

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Embedded GIS based on PDA combined with GPS is promising in realizing the real display of the maps under the mobile computation situation.

基于PDA的嵌入式GIS与GPS相结合实现在移动计算环境下的地图的实时显示有很好的应用前景。

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Here we expound two approaches to GPS corrections model by Partial Derivative Algorithm(PDA) and Linear Interpolation Algorithm(LIA), then probe their advantages and disadvantages.

对偏导数算法（PDA）和线性内插算法（LIA）两种改正数模型化方法进行探讨，并说明两种方法的优缺与应用范围。

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Here we expound two approaches to GPS corrections model by Partial Derivative Algorithm(PDA) and Linear Interpolation Algorithm(LIA), then probe their advantages and disadvantages.

对偏导数算法（PDA）和线性内插算法（LIA）两种改正数模型化方法进行探讨，并说明两种方法的优缺与应用范围。

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