提出了协同环境下虚拟产品设计系统的体系结构。
System structure of virtual product design in collaborative environment is put forward.
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。
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.
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 virtual prototype system of railway locomotives and vehicles provides a modeling and simulation environment for optimization of product design and production process.
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；
The importance of developing an evaluation system collaborated by experts for virtual product design using CSCW technology is discussed.
通过虚拟样机技术，工程师可以运用机械系统仿真试验，在设计阶段发现产品设计中的潜在问题，并快速进行修改，减少了对于物理样机的依赖。
By simulation tests, engineer can not only discover the potential problems of design and modify it in time, but also decrease the dependence on physical model.
通过虚拟样机技术，工程师可以运用机械系统仿真试验，在设计阶段发现产品设计中的潜在问题，并快速进行修改，减少了对于物理样机的依赖。
By simulation tests, engineer can not only discover the potential problems of design and modify it in time, but also decrease the dependence on physical model.
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