利用MATLAB实现排队网络的仿真模拟,统计给定 和 条件下系统的平均队长和平均系统时间，与理论结果进行比对,统计单个系统的平均队长和平均系统时间随 的变化曲线。-Realize the use of MATLAB queuing network simulation, statistics and the given conditions, the system average queue length and average system time, and theoretical results were compared, with the statistics of the individual systems average queue length and average system time curve.