Through the analysis in space time, it reveals the law of spatial and temporal distributing in the past time.

通过对洪涝灾害在时间上和空间上的分析，揭示了洪涝灾在历史上的时空分布规律。

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Finally, the analysis of temporal and spatial performance is discussed.

最后对该方法进行了时间和空间性能分析。

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This paper shows the design of spatial-temporal data structure, the analysis of methods of history information backward recovering, and some example of important programming.

给出了时空数据模型的设计、历史沿革追溯与时间断面复原算法的分析，以及算法实现中的关键部分。

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