rf wave

例句：

1. 1. The scientist detected the rf wave with his detector.
   科学家用探测器检测到了射频波。
2. 2. The rf wave is a signal that travels through space and can be picked up by radios.
   射频波是一种通过空间传播的信号，可以通过收音机接收。
3. 3. The rf wave was used to transmit information across long distances.
   射频波被用来在远距离传输信息。