一定频谱范围内的无线电波只能搭载有限的广播频道；同轴电缆只能传 输有限的电视频道。

The radio spectrum can carry only so many stations, and a coaxial cable so many TV channels.

youdao

一定频谱范围内的无线电波只能搭载有限的广播频道；同轴电缆只能传 输有限的电视频道。

The radio spectrum can carry only so many stations, and a coaxial cable so many TV channels.

youdao