中文说明：
分析流量时，程序从文件“trans.txt”读取数据，其中第一列是时间，另一列是流量。读取数据输出计划回程后，带宽取决于时间。
English Description：
When analyzing traffic, the program reads data from the file "trans. TXT", in which the first column is time and the other column is traffic. After reading the data output plan return, the bandwidth depends on the time