Until now, there is little principle and systemic analysis to virtual technology.

现有的虚拟化技术缺乏一种系统的分析与认识。

The forecast evaluation based on virtual technology is an important approach to improve the design quality of HMI .

基于虚拟技术的事先设计评价是提高人机界面设计质量的重要途径。

With the development of virtual technology and three-dimensional geospatial data collection technology, more and more cities began to build their own digital city.

和灭实拟技巧的收铺，地球空间数据获取脚腕如摄影测量、激光扫描等技巧突飞猛入，越来越长的城市开初建设本人的数字城市。