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单词 momentum
释义

momentum /məˈmentəm//moʊˈmentəm/

英汉-汉英词典
n. 动力;动量;冲力;势头
复 数: momenta
词组 | 习惯用语
angular momentum [化]角动量
momentum equation 动量方程
momentum conservation 动量守恒
momentum transfer 动量传递;动量交换
conservation of momentum 动量守恒;动量不变原理
momentum flux 动量通量
linear momentum 线动量;线动量陀螺仪
gain momentum 发展加快;势头增大
orbital angular momentum 轨道角动量
momentum balance 动量平衡
momentum theory 动量理论
moment of momentum 动量矩;角动量
momentum integral 动量积分
momentum coefficient 动量系数
英语例句库
  1. 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。
  2. Angular momentum can accompany nonrotational motion.
    非旋转的运动可能伴随着有角动量
  3. The movement was gaining momentum.
    这运动势头越来越大。
  4. Those variables for which it holds (e.g., momentum and position, or energy and time) are canonically conjugate variables in classical physics.
    那些具有的变量(如动量与位置,或能量与时间)是经典力学里的正则共轭变量。
  5. According to this hypothesis, the solar wind could transfer energy and momentum to the plasma surrounding the earth only by wave motions along the magnetopause.
    根据这项假说,太阳风只能靠磁层顶上的波动,来传递能量与动量给地球四周的电浆。

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原声例句
VOA Daily Standard 2018年10月合集

But the Greens believe they have the momentum.

但绿党认为他们还能一搏。

TED 2019年度大会(双语)

We have the most momentum around receptivity.

我们在接受能力很强。

CNN 精选 2016年2月合集

But winning Iowa does give candidates momentum.

但爱荷华州党团会议的胜者会激励候选人。

林超伦实战口译练习笔记

Crucially that will mean keeping up the momentum of structural economic reform.

这将意味着要保持结构性经济改革的动力

CNN 听力 2013年11月合集

But can Twitter keep the momentum going?

但问题在于推特可以继续保持势头吗?

CRI在线 2023年5月合集

He says China's reopening provides fresh momentum.

他表示,中国的重新开放提供了新的动力

2010版二级口译实务教材

Smoke-Free Soccer is another campaign gathering momentum.

此外,无烟足球活动也正在兴起

VOA Daily Standard 2020年10月合集

" It is up to us to accelerate the momentum" .

" 如何加速这个势头的发展就取决于我们自己的努力。"

TED-Ed(视频版)

But the original star's angular momentum is preserved.

但原始恒星的角动量被保留了下来。

VOA Special 2016年1月合集

Cats use less momentum and a more gentle action.

猫喝的方式较为优雅。

中文百科

动量

除去因摩擦与传热因素所造成的微小损失,在撞球运动里,可以很明显的观察到,所有圆球都遵循动量守恒定律。当圆球A击中圆球B时,假若圆球A因此停住,则它的原本动量都会传给圆球B;假若圆球A仍旧移动,则它的原本动量只有一部分会传给圆球B,剩余的动量存留在圆球A。

在古典力学里,动量(momentum)是物体的质量和速度的乘积。例如,一辆快速移动的重型卡车拥有很大的动量。若要使这重型卡车从零速度加速到移动速度,需要使到很大的作用力;若要使重型卡车从移动速度减速到零速度也需要使到很大的作用力。假若卡车能够轻一点或移动速度能够慢一点,则它的动量也会小一点。

动量在国际单位制中的单位为kg·m/s。有关动量的更精确的量度的内容,请参见本页的动量的现代定义部分。

一般而言,一个物体的动量指的是这个物体在它运动方向上保持运动的趋势。动量实际上是牛顿第一定律的一个推论。

动量是个矢量。

英语百科

Momentum 动量

A Newton's cradle demonstrates conservation of momentum.
Newton's apple in Einstein's elevator. In person A's frame of reference, the apple has non-zero velocity and momentum. In the elevator's and person B's frames of reference, it has zero velocity and momentum.
Two-dimensional elastic collision. There is no motion perpendicular to the image, so only two components are needed to represent the velocities and momenta. The two blue vectors represent velocities after the collision and add vectorially to get the initial (red) velocity.

In classical mechanics, linear momentum or translational momentum (pl. momenta; SI unit kg m/s, or equivalently, newton second) is the product of the mass and velocity of an object. For example, a heavy truck moving rapidly has a large momentum—it takes a large or prolonged force to get the truck up to this speed, and it takes a large or prolonged force to bring it to a stop afterwards. If the truck were lighter, or moving more slowly, then it would have less momentum.

近义、反义、联想词
近义词
n.
force, forcefulness, strength, physical property

联想词
impetus促进;propel推进;gaining增进单向开槽;accelerating加速的;inertia惯性;gains收益;trajectory弹道,轨迹;kinetic运动的;velocity速率;traction牵引;bounce弹力;
英英词典
momentum n.
  1. an impelling force or strength
    • the car's momentum carried it off the road

    synonymous: impulse
  2. the product of a body's mass and its velocity
    • the momentum of the particles was deduced from meteoritic velocities
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更新时间:2025/6/21 22:35:16