The theory and method of measuring moving target′s velocity using atomic transmission are described.

论述了用原子滤波器的透射率廓线测量激光多普勒频移的直接检测方法和理论。

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The deep space exploration has the characteristics of long time delay, high satellite′s velocity and the weak signal.

深空探测具有时延长、运动速度大以及信号强度低的技术难点。

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Scientists have used data from Voyager 1's Low-Energy Charged Particle Instrument to deduce the solar wind's velocity.

科学家们已经通过旅行者1号上面的低能带电粒子仪测量出了太阳风的速度。

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And in terms of equations that we use, it's sometimes easier to plug in the fact, since momentum is equal to mass times velocity.

在我们使用方程这方面，事实上有时是很容易代入的，因为动量等于质量乘以速度。

麻省理工公开课 - 化学原理课程节选

Let's plot droplet velocity as a function of looking at the number that have this velocity 0 with the zero being in the center here.

我们将液滴的速度设定为,观察那些数字作用，在中心的地方,速度为。

麻省理工公开课 - 固态化学导论课程节选

The second piece of information we need to know is what actually the kinetic energy is of the ejected electron, and that's something we can just measure by measuring its velocity.

其次，我们需要知道的信息是,出射电子的动能，这可以通过,测量它们的速度得到。

麻省理工公开课 - 化学原理课程节选

By then, Yankees manager Joe Girardi and pitching coach Larry Rothschild noticed Pettitte's velocity had dropped, and they went to the mound and took him out.

WSJ: Pettitte hurt's back as Mariners beat Yankees 3-2

The bullet's velocity was stopped by an eyeglass case and a thick manuscript, for a speech which Roosevelt characteristically insisted on giving before going to the hospital.

CNN: What we in 2012 can learn from Teddy Roosevelt in 1912

The rifle's muzzle velocity is 210 metres a second, which is the starting point for the calculation.

ECONOMIST: Military technology