n.射频；无线电频率
Radio frequency and communication test equipment. 射频通信综合测试仪。
Method of insertion loss measurement for radio frequency filters. 射频滤波器插入损耗的测量方法。
Tuner will be able to track the frequency-hopping radio frequency. 调谐器可以追踪跳频无线电频率。
The enemy never monitors your radio frequency until you broadcast on an unsecured channel. 在你使用不安全的频道发布之前，敌人都不会监听你的无线电频率。
