Shenzhen;
Graduate;
School;
Beijing;
Engineering;
Technology;
Research;
Center;
of;
Virtual;
Simulation;
and;
Visualization;
School;
of;
Electronics;
Engineering;
and;
Computer;
Science;
Peking;
University;
China;
矢量图形; 虚拟仿真环境; 编辑; 虚拟环境; 显示模式; 多分辨率; 铁路网络; 矢量数据;