Atmospheric duct propagation is an anomalous propagation phenomena associated with specific weather conditions.
大气波导传播是一种与特殊的气象条件相关的反常传播现象。
Sea surface and bottom constituted sound propagation environment of the neritic acoustic duct field.
海面与海底构成了声源浅海海域波导场的声传播环境。
Atmospheric duct is one of the hot-topics and difficult problems in the propagation of electromagnetic waves in troposphere.
大气波导的影响是对流层电磁波传播研究的热点和难点问题之一。
Atmospheric duct is a common phenomenon over the oceans and conditions of anomalous radio propagation.
大气波导是海上经常出现的现象，会导致电波异常传播。
Four propagation models of diffraction, line-of-sight, scatting and duct are analyzed. The basic transmission loss for each of the models is calculated according to the ITU-R model and GZB model.
分析了电波的地波绕射传播、视距传播、散射传播和波导传播等四种传播模式，根据ITU - R和GZB建议的模型分别计算了各传播模式的基本传输损耗。
Four propagation models of diffraction, line-of-sight, scatting and duct are analyzed. The basic transmission loss for each of the models is calculated according to the ITU-R model and GZB model.
分析了电波的地波绕射传播、视距传播、散射传播和波导传播等四种传播模式，根据ITU - R和GZB建议的模型分别计算了各传播模式的基本传输损耗。
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