amplitude modulation

n. 调幅, 调幅广播

例句与用法：

The amplitude or loudness of a sound.

音量声音的响度或强度

By their comprehensiveness and amplitude these picture fille the imagination.

这些照片以其综合性和丰富而充满了想像力。

A device that converts a property of an input signal, such as frequency or phase, into an amplitude variation, depending on how the signal differs from a standard or reference signal.

鉴别器，鉴频器一种将输入信号的某一特征，如频率或相位转变为幅度变化装置，其变化大小因信号与标准或参考信号的不同程度而异