Based on the concept of virtual enterprise, it is necessary to develop a proper product definition model for collaborative product development system in distributed environment.

基于虚拟企业的思想，分布式环境下的协同产品开发系统迫切需要有一个合理的产品定义模型。

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The practical application in demonstration enterprise shows that the proposed system can enhance the ability of the collaborative product design.

实际应用表明，该系统能有效地提高相关企业的产品协同设计能力。

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This paper analyses the traditional project management can't adapt to the virtual enterprise, and proposes a collaborative project management system.

分析了传统的项目管理不再适用现在虚拟企业的模式，提出了在虚拟企业环境下的协作项目管理系统。

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