1540s, from Middle French amplitude or directly from Latin amplitudinem (nominative amplitudo) "wide extent, width," from amplus (see ample). Amplitude modulation in reference to radio wave broadcast (as opposed to frequency modulation) first attested 1921, usually abbreviated A.M.
实用例句
1. As we fall asleep the amplitude of brain waves slowly becomes greater.
进入睡眠状态时，我们的脑电波振幅慢慢变大。
来自柯林斯例句
2. The amplitude of the vibration determines the loudness of the sound.
振动幅度的大小决定声音的大小.
来自《简明英汉词典》
3. Business cycles did not fade away, but their amplitude did moderate substantially.
商业周期虽未消失, 但其波动范围受到了很大的限制.
来自英汉非文学 - 新闻报道
4. The frequency and amplitude of vibration are monitored .
振动的频率与振幅受到监控。
来自辞典例句
5. The foreground for the cooperation between China and UAE in the energy field is amplitude.
