momentum
英[m?'ment?m]
美[mo'm?nt?m]
- n. 勢頭；[物] 動量；動力；沖力
詞態變化
復數:?momentums;?momenta;
助記提示
1. 動量表示為物體的質量和速度的乘積，因此動量是每個瞬間時間點的瞬間狀態量。所以它名稱是：moment => momentum.
2. 動量(momentum)與沖量(impulse)的區別：動量是狀態量，沖量是一個過程量。
中文詞源
momentum 動力，勢頭
來自拉丁語momentum,運動，變化，沖擊，詞源同moment,move.
英文詞源
- momentum (n.)
- 1690s, scientific use in mechanics, "quantity of motion of a moving body," from Latin momentum "movement, moving power" (see moment). Figurative use dates from 1782.
雙語例句
- 1. Demands for his dismissal have gathered momentum in recent weeks.
- 最近幾周，要求將他解職的呼聲越來越高。
來自柯林斯例句
- 2. The fight for his release gathers momentum each day.
- 爭取使他獲釋的斗爭聲勢日益加強。
來自《權威詞典》
- 3. The sledge gained momentum as it ran down the hill.
- 雪橇從山上下沖時的動力越來越大.
來自《簡明英漢詞典》
- 4. The historical tide is surging forward with great momentum.
- 歷史洪流氣勢磅礴,奔騰向前.
來自《現代漢英綜合大詞典》
- 5. The style prevails and picks up momentum.
- 這式樣很流行,而且越來越流行.
來自《簡明英漢詞典》