为什么在隧道中调频广播比调幅广播的信号要好一点？

How come we can hear FM longer in a tunnel than AM?

youdao

振荡源的调频调幅噪声是一项重要的技术指标。

FM and AM noise of the oscillator is one of the important specifications.

youdao

我还想指出，(上)有调幅-调频立体声收音机。

I should (also) point out (that) an AM-FM stereo radio is included.

youdao

我还想指出，(上)有调幅-调频立体声收音机。

I should (also) point out (that) an AM-FM stereo radio is included.

youdao