左边的窗口太大，因为被跟踪的功能只是占据中心的一个小区域窗口。
The window on the left is too large, because the feature being tracked is only occupying a small area in the centre of the window.
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。
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.
本文提出一种能有效预测微小区环境中电波传播路径的射线跟踪算法。
This paper provides an effective ray tracing method for prediction of microcell radio propagation.
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