N个并列的单通道等待制系统，各服务员能力相等，服务时间服从指数分布，顾客的总体到达服从指数分布，用Monte－Carlo方法，按1…N的顺序循环排入-N tied for the single-channel system, the attendant equal ability, service to follow exponential distribution, customers submit to reach the overall index distribution, Monte-Carlo method, in accordance with an order of the N ... into the circle