本文所提出的卜程图纸管理系统的构建模式与实现方法，对同类系统的设计有一定的借鉴作用。

In this thesis, we presented the building model and implementation method has some references to the designing work of similar system.

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并且在剖析与设计入程中，应用设计模式的原理，提高所设计的软件的可重用性和可维护性。

And in analysis and designing process employ design pattern principle, raise design software reusability and maintainability.

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并且在剖析与设计入程中，应用设计模式的原理，提高所设计的软件的可重用性和可维护性。

And in analysis and designing process employ design pattern principle, raise design software reusability and maintainability.

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