说明：  通过仿真单服务台排队系统仿真，发现仿真系统受输入参数的影响较大；上面所取的顾客到来时间期望与购物结束期望相当，所以在购物区滞留的顾客数较少，就购物区输入约等于输出
(Through the simulation of single-service queuing system simulation, simulation system was found by the influence of input parameters above take time to look forward to working with customers coming to the end of hope rather, staying in the shopping district a few less customers, shopping areas on the importation of some equivalent to the output)