虚拟技术广泛应用于仿真和人机交互，但是真正应用于商业用途尤其是会展行业的虚拟会展研究却并不成熟。

Virtual technology widely used in simulation and human-computer interaction, but the virtual exhibition studies for commercial purposes, especially for Convention and exhibition is not mature yet.

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图形用户界面(GUI)是指在应用程序中以图形化的界面实现人机交互的一种新颖计算机技术。在电力系统仿真中，这一技术的应用已越来越广。

Graphics User interface (GUI), a new computer technique, is widely used in power network simulation to realize man machine interaction with graphics interface in application programs.

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