amplitude
英 ['?mpl?tju?d]
美 ['?mpl?'t?d]
助記提示
1.【信號學(xué)】：振幅，振幅是指振動的物理量可能達(dá)到的最大值，通常用 A 表示，它就是單詞 amplitude 的首字母縮略。它是表示振動的范圍和強(qiáng)度的物理量。
2. 我們通常所說的調(diào)幅就是：AM（Amplitude Modulation），而調(diào)頻是：FM（Frequency Modulation ），經(jīng)常聽收音機(jī)的朋友肯定對這兩個(gè)術(shù)語很熟悉。
中文詞源
amplitude 廣大，廣闊ample,大量的，-itude,名詞后綴。
英文詞源
- amplitude (n.)
- 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.
雙語例句
- 1. As we fall asleep the amplitude of brain waves slowly becomes greater.
- 進(jìn)入睡眠狀態(tài)時(shí)，我們的腦電波振幅慢慢變大。
來自柯林斯例句
- 2. The amplitude of the vibration determines the loudness of the sound.
- 振動幅度的大小決定聲音的大小.
來自《簡明英漢詞典》
- 3. Business cycles did not fade away, but their amplitude did moderate substantially.
- 商業(yè)周期雖未消失, 但其波動范圍受到了很大的限制.
來自英漢非文學(xué) - 新聞報(bào)道
- 4. The frequency and amplitude of vibration are monitored .
- 振動的頻率與振幅受到監(jiān)控。
來自辭典例句
- 5. The foreground for the cooperation between China and UAE in the energy field is amplitude.
- 中阿能源領(lǐng)域合作勢頭好，前景廣闊。
來自辭典例句