The basic function, constructing way and information searching workflow of sub-module were studied, which provide base for development of learning module of virtual printing problems training system.
通过研究子模块的基本功能、构建方法和信息检索流程，为虚拟印刷故障培训系统学习模块的开发奠定基础。
This USES a form of a virtual printer-basically printing the text document to a format that can be saved to file and somewhat protected from other authors.
这使用了一种虚拟打印机的形式—即将文本文档打印为某种格式，这种格式可以被保存到文件中并一定程度上防止其他作者修改。
The method of designing the printing roller grinder bed with CAD and CAE integration technology under virtual environment is put forward. It has important significance in designing other products.
本文提出的利用CAD和CAE集成技术在虚拟环境下对版辊磨床床身进行开发设计的方法，对产品的动态优化设计具有指导意义。
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