对车次的查询，可以按照发车车次进行查询； 车次信息包括：车号、出发地、目的地、发车日期、开出时刻、票价。 -Queries on the trips, trips can be queried by the grid trips information, including: number, origin, destination, departure date, out of time, fares.

matlab编程实现从东北天坐标系到地心坐标系的坐标转换，包含了资料文件。调用函数名为：ENVtoECEF，输入参数为东北天原点经纬度数据，东北天坐标点数据；输出数据是东北天坐标系下坐标点对应的经纬高数据。-matlab programming from the northeast sky coordinate system to the geocentric coordinate system conversion, including the data file. Call the func

In this report, we study on the intermodal transportation system of Pearl River Delta city group. In the system, each city is regarded as a node. For convenience, we remove some unimportant cities and simplify the system from 14 nodes to 5 nodes. Bec