momentum
英[mə'mentəm]
美[mo'mɛntəm]
- n. 势头；[物] 动量；动力；冲力
词态变化
复数: momentums; momenta;
助记提示
1. 动量表示为物体的质量和速度的乘积，因此动量是每个瞬间时间点的瞬间状态量。所以它名称是：moment => momentum.
2. 动量(momentum)与冲量(impulse)的区别：动量是状态量，冲量是一个过程量。
中文词源
momentum 动力，势头
来自拉丁语momentum,运动，变化，冲击，词源同moment,move.
英文词源
- 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.
双语例句
- 1. Demands for his dismissal have gathered momentum in recent weeks.
- 最近几周，要求将他解职的呼声越来越高。
来自柯林斯例句
- 2. The fight for his release gathers momentum each day.
- 争取使他获释的斗争声势日益加强。
来自《权威词典》
- 3. The sledge gained momentum as it ran down the hill.
- 雪橇从山上下冲时的动力越来越大.
来自《简明英汉词典》
- 4. The historical tide is surging forward with great momentum.
- 历史洪流气势磅礴,奔腾向前.
来自《现代汉英综合大词典》
- 5. The style prevails and picks up momentum.
- 这式样很流行,而且越来越流行.
来自《简明英汉词典》