Adopting search technique, database technique and network technique, the thesis realizes the news search engine that applies to the system and provides real time news for fast train.

本文结合搜索、数据库、网络等多种技术，实现了用于高速铁路旅客信息系统的新闻搜索引擎，该引擎为高速列车提供实时新闻。

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The partition technique of ORACLE is introduced in this article; some partition schemas of real-time database system in MDSS are also given, with the experiments results.

本文对ORACLE数据库的分区技术进行了介绍，对分区技术在国家级气象资料存储检索系统（MDSS）实时数据库中的应用方案及初步实验结果进行了探讨。

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In this paper, the simplified technique of Terrain Surface is discussed and a new real-time simplified method based on DEM database is obtained to be a solution to defects of traditional methods.

围绕三维可视化技术中的地表模型简化方法进行了分析与探讨，针对传统简化方法中所存在的不足之处提出了一种新的基于DEM库数据组织的地表模型的实时简化方法。

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