一些标准矩形波导管的相关数据，如标准型号，主模频率，面尺寸等，方便计算矩形波导的传输。-Some standard rectangular waveguide relevant data, such as the standard model, the main mode frequency, surface dimensions, etc., to facilitate the calculation of rectangular waveguide transmission.

大气波导中电磁波传播及雷达回波作用机制研究,利用matlab实现仿真-atmospheric duct：parabolic equation：propagation loss；RCS；radar cIHtter

叙述了关于超声导波污垢的研究进展以及研究方向-The direction of ultrasonic guided wave dirt research progress and research