Second, it introduces the related theory of the distributed database system and software engineering used in the project.

接着介绍了在系统开发中用到的分布式数据库技术的理论和软件工程理论；

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The office automated system basing on knowledge management developed with software engineering theory will well control the software development progress, cost and quality, and get proper outputs.

利用软件工程理论开发基于知识管理的办公自动化系统，能够很好的保障软件开发的进度、成本和质量，得到满足用户需求的软件产品。

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In this paper, the cost estimate system of constructional engineering has been studied based on the theory of Fuzzy Mathematics and Grey system, and a practical computer software has been worked out.

本文利用模糊数学和灰色系统理论，对建筑工程造价估测系统进行了研究，并在此基础上，研制成实用软件。

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