radio wave propagation characteristic
radio wave propagation characteristic
无线电波传播特性
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Propagation characteristic of UHF radio wave in rectangle, circle and arched tunnels is studied in this paper and the computing equation for attenuation constant is deduced.
研究UHF频段的无线电波在矩形、圆形和拱形隧道中的传播特性，推导了衰减常数的计算公式。
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