momentum

英 [məˈmentəm]

美 [moʊˈmentəm]

n.  推进力; 动力; 势头; 冲力; 动量

CET6考研IELTSGRETEM8化学

Collins.2 / BNC.5641 / COCA.4335

牛津词典

noun

• 推进力；动力；势头
  the ability to keep increasing or developing
  1. The fight for his release gathers momentum each day.
     争取使他获释的斗争声势日益加强。
  2. They began to lose momentum in the second half of the game.
     在比赛的下半场，他们的势头就逐渐减弱。
• 冲力
  a force that is gained by movement
  1. The vehicle gained momentum as the road dipped.
     那辆车顺着坡越跑冲力越大。
• 动量
  the quantity of movement of a moving object, measured as its mass multiplied by its speed

柯林斯词典

• N-UNCOUNT 势头;冲劲;动力
  If a process or movement gainsmomentum, it keeps developing or happening more quickly and keeps becoming less likely to stop.
  1. This campaign is really gaining momentum...
     该运动的势头越来越猛。
  2. They are each anxious to maintain the momentum of the search for a solution.
     他们每个人都迫切希望能一直劲头十足地去寻求解决方案。
• (物理学中的)动量，冲量
  In physics,momentumis the mass of a moving object multiplied by its speed in a particular direction.

英英释义

noun

• the product of a body's mass and its velocity
  1. the momentum of the particles was deduced from meteoritic velocities
• an impelling force or strength
  1. the car's momentum carried it off the road
  Synonym:impulse

双语例句

• It's momentum of the system that is conserved.
  是系统内的动量被转化了。
• You should also be familiar with momentum and kinetic energy for elastic and inelastic collisions.
  你应该熟悉弹性和非弹性碰撞下的动量和动能变化。
• As my opponent threw himself at me, I used his momentum to fling him to the ground.
  对手扑过来，我就势把他摔倒在地。
• Why? Because it has angular momentum.
  为什么，因为有了一个角动量。
• Angular momentum has two key components: spin angular momentum and orbital angular momentum.
  角动量有两个分量：自旋角动量和轨道角动量。
• Spinning this direction, angular momentum is in this direction.
  这个方向旋转，角动量是，这个方向。
• You give it spin angular momentum, it becomes stable.
  有了一个旋转的角动量，就变得稳定。
• This is the plus or minus, so the product of the uncertainty and the momentum.
  是加或减，所以不确定度和动量的结果。
• I torque for time delta t, and so I add angular momentum like this.
  我的力的时间是δt，我加入，了角动量像这样。
• That means if there's torque, there's a change of angular momentum.
  这意味着，如果那有一个力矩，就会有角动量的改变。