The basic framework of Virtual Product Design System for Parallel Machine Tools (PMT VPDS) and functions of three subsystems are introduced. The archetypal system is developed.
介绍了并联机床虚拟产品设计系统（P MT V PDS）的基本框架及其子系统功能。
System structure of virtual product design in collaborative environment is put forward.
提出了协同环境下虚拟产品设计系统的体系结构。
The virtual prototype system of railway locomotives and vehicles provides a modeling and simulation environment for optimization of product design and production process.
铁路机车车辆虚拟样机系统为产品设计和生产过程的优化提供了集成的建模和仿真环境。
The importance of developing an evaluation system collaborated by experts for virtual product design using CSCW technology is discussed.
利用计算机支持的协同工作（CSCW）技术，开发一个面向虚拟产品设计的专家协同评审系统；
It mainly introduces the structure of the system and the functions of main modules, discusses the key techniques and methods in modeling data product in virtual design.
文章着重阐述了系统的总体结构，各模块的功能及实现方法，提出了船舶结构数据产品模型的建立方法，对建模中的关键技术进行了研究、开发。
It mainly introduces the structure of the system and the functions of main modules, discusses the key techniques and methods in modeling data product in virtual design.
文章着重阐述了系统的总体结构，各模块的功能及实现方法，提出了船舶结构数据产品模型的建立方法，对建模中的关键技术进行了研究、开发。
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