“调幅”的英语表达是 amplitude modulation ,常缩写为 AM 。
例如:
AM radio uses amplitude modulation to transmit signals.(调幅广播使用调幅技术来传输信号 。)
In amplitude modulation, the amplitude of the carrier wave is varied in accordance with the instantaneous amplitude of the modulating signal.(在调幅中,载波的振幅根据调制信号的瞬时振幅而变化 。)