电视、广播和雷达技术 Technology of TV, radio, radar
电视 广播和雷达技术
Television broadcasting and radar technology
以上为机器翻译结果，长、整句建议使用 人工翻译 。
通信、广播、电视、雷达、导航等无线电技术设备中，都需要有无线电波的辐射和接收，进而离不开天线设备。
In modern radio technology components such as communication, broadcast, television and radar system, the radiation and receiving of the radio waves are inevitably, then antenna is needed.
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