该模型采用排队论进行描述，利用串行与并行排队模型对系统原型进行建模；
The system model was depicted by queuing theory, serial as well as parallel queuing model were employed in setting up the system model.
不喧哗吵闹，排队遵守秩序，不并行挡道，不在公众场所高声交谈。
Don't yell or shout out loud. Always join a public queue for good order.
不喧哗吵闹，排队遵守秩序，不并行挡道，不在公众场所高声交谈。
Don't yell or shout out loud. Always join a public queue for good order. Don't walk abreast on a sidewalk.
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