On this condition, the paper put forward a new electric wave transmition model in the microcell , which based on ray tracing method of Virtual Fountain Tree.
在总结前人工作的基础上，本文提出了一种新的基于“虚拟源树”射线跟踪技术的微蜂窝小区的电波传播模型。
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Through tracing test of college students' heart and lung function, this paper analyses their functioning conditions at present and puts forward some Suggestions and measures for improvement.