At first, this thesis introduces the VLSI physical design process, based on this leads to the rectilinear Steiner tree problem.

本文首先介绍了超大规模集成电路的物理设计流程，在此基础上引出直角斯坦纳树问题。

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This thesis illustrates the key techniques and realizing technology on the process of system development and Tree of Assembly, database design, drawing browsing, file transfer, popedom management etc.

本文论述了本系统开发的流程和图档装配树、数据库设计、图纸浏览、文件传输、权限管理等关键技术和实现方法。

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The system manage design process of a product with project mode, and can establish and manage function-means tree, product tree and design matrixes to store structurized design data.

系统以工程形式来管理一个产品的设计过程，能够创建和管理功能方法树、产品结构树，建立设计矩阵，结构化存储设计数据。

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