flex+xml级联下拉菜单：省/市/区的三个级别(基本包括全国各省市区的数据资料）；数据xml格式保存；开发环境为flash builder4.5-Flex+ XML cascade drop-down menu: province/area three levels (including the provinces of urban basic data) Data XML format save Development environment for flash builder4.5

模仿交通的软件，能够创建新的模型，跟据大城市的具体情况，模拟城市交通-Imitate traffic software, able to create a new model, according to the specific circumstances of the big cities, simulated urban traffic