An RF-Hood for antenna measurements at low frequencies comprises a waveguide and a first conductor coupled with the waveguide. The first conductor is formed by four electrically conductive walls forming lateral surfaces of a pyramidal frustum. A second conductor is formed by four electrically ...
Little Red Riding Hood 小红帽(三年级上册 快乐英语阅读2021版 译林出版社) 英语跟我读 小学版 2023-10-06 06:08 发表于江苏 阅读图文 听读音频 常速慢速跟读视频 ,时长05:50 喜欢此内容的人还喜欢
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