腾讯QQ支持多用户设置，漫游功能。
建立了KSFO机场的合成三维视景并完成了视景的渲染和漫游功能。
KSFO airport synthetic vision was established, and vision rendering and travel functions were realized.
介绍了一个有自主知识产权的数字车间系统（DWS），它提供了企业车间设计和漫游功能；
This paper introduces a digital workshop system(DWS) that has the independent knowledge property right, it is mainly to provide the function of workshop design and travel inside;
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