为改善计算效率，提出了一种局部口面网格优化算法对射线追踪法进行改进。
A new technique named local aperture grid optimization arithmetic was presented to improve the efficiency of the classical method.
而用潮流追踪法追加成本又会损害市场效率。
While the cost supplements based on load flow tracing methods will damage the market efficiency.
提出一种射线追踪的新方法，解决了传统弹跳射线法(SBR)确定射线路径困难、精度不高和效率较低的问题。
A novel ray-tracing method is developed, which overcomes the disadvantages in ray-tracing of the traditional shooting and bouncing ray (SBR) method.
提出一种射线追踪的新方法，解决了传统弹跳射线法(SBR)确定射线路径困难、精度不高和效率较低的问题。
A novel ray-tracing method is developed, which overcomes the disadvantages in ray-tracing of the traditional shooting and bouncing ray (SBR) method.
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