Based on the radio waves propagation models of circular tunnels and rectangular tunnels, the relation between attenuation and conductivity is analyzed and the concept of conductivity breakpoint is presented.

 
  • 根据圆形巷道和矩形巷道的电波传播模型,分析了电波衰减率和电导率的关系,并且提出了电导率断点的概念。
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