One of them is: the velocity of light is invariable.
其中一个前提是，光的速度不变。
The students were asked to calculate the velocity of light.
当显示图形的时候，计算速度降低了。
Einstein's theory links energy with mass and velocity of light.
爱因斯坦的理论把能量同质量和光速联系起来。
The so-called velocity of light invariable is the light fluctuation speed is invariable.
所谓光速不变是光的波动速度不变。
The velocity of light is the ultimate speed limit, being part of the very structure of space and time.
作为时空结构的一部分，光速是终极速度极限。
In other words, its mass must increase without limit when its velocity approaches the velocity of light.
换句话说就是，当它的速度接近于光速时，它的质量肯定无限制的增大了。
In recent years, researches about the controllable group velocity of light propagation had made many progresses.
最近几年中，慢光和超光速的研究取得了很多进展。
This paper presents the experiment and design thinking for measuring velocity of light by using a copper bromide laser.
本文介绍了用溴化亚铜激光器利用光脉冲法来测定光速的实验及其设计思想。
The phase velocity of the plasma wave approaches the velocity of light due to the action of the longitudinal electric field.
在这样的纵向电场作用下，等离子体波的相速接近光速。
When the tangential and radial velocity of light source both does not equal 0, the light-wavelength is changeless under certain condition.
当光源的切向速度和视向速度都不为0时，在一定条件下光波波长不变。
Until now, there is no practical optical buffer. In our case, we try to realize data storage or packet synchronization by slowing down the group velocity of light.
目前还没有可实用的光缓存，我们旨在通过减慢光速来实现信号的存储或者同步。
It having been established that the velocity of light did not behave like that of a wave, the remaining possibility was that it behaved more like that of a projectile.
已经确定了光速与波的表现是不同的，剩下的可能性就是它更像是一个抛射体。
In the same pyrolysis condition, the pyrolysis velocity of light hydrocarbon obviously decreases with the increase of carbonized degree and increases with the decrease of coal particle size.
在相同的热解条件下，轻质烃的热解析出速率随着煤种碳化程度的增高而明显降低，随着煤粉粒径的减小而逐渐升高；
This article introduced the basic theory and method of measuring the velocity of light using the method of phase difference and how to measure the velocity of light using phase difference in air.
介绍了一台自制的利用相位差法测量光速的仪器的基本原理和方法，并通过对光在空气中的传播速度的测定，使大家对用相位变化测量光速仪器有所了解。
Radial velocity, also known as the Doppler wobble technique, involves searching for wobbles in a star's light that indicate the gravitational pull of an orbiting planet.
径向速度法，也被称为多普勒摆动技术，用于搜索恒星光线的摆动，它显示出来自轨道上运行的行星的万有引力。
Radial velocity is a planet-hunting technique that looks for wobbles in a star's light, which can indicate the gravitational tugs of orbiting worlds.
径向速度是一项搜寻行星技术，可以通过寻找恒星光线的摆动。
The speed of light is widely regarded as the Universe's ultimate velocity limit.
光速被广泛认为是宇宙中速度的极限。
Although previous studies have found that the "group velocity" of light can travel faster than c, the "signal velocity" -the speed at which information travels -cannot.
尽管先前的研究已经证实，光的“群速度”可以超越光速c，而“信号传播速度”——光携带的信息的传播速度——不能超越光速。
Although previous studies have found that the "group velocity" of light can travel faster than c, the "signal velocity" - the speed at which information travels - cannot.
尽管先前的研究已经证实，光的“群速度”可以超越光速c，而“信号传播速度”——光携带的信息的传播速度——不能超越光速。
The gravitational field is so strong that the escape velocity near it exceeds the speed of light.
重力场是如此的强大以致于靠近它的逃逸速度超过光速。
Then the possibility of larger phase velocity and group velocity than light speed in dispersive medium is discussed.
然后从色散介质中相速度与群速度的关系，讨论了相速度和群速度超光速的可能性。
According to the analysis of the influence of heavy phase separation and light phase separation on the migration velocity, the track of the migration of the dispersed fluid drops is worked out.
根据重相分离和轻相分离对迁移速度影响的分析，得出分散相液滴迁移运动轨迹。
The landau damping rate is obtained by solving the dispersion equation of relativistic longitudinal plasmons with the sub-light-velocity numerically.
在亚光速区，对处于相对论性振荡的纵等离激元色散方程进行数值求解，得到了朗道阻尼系数的数值解。
On the basis of Lorentz transformation, correction must be made on visual effect in two aspects, because the value of the light velocity is finite.
在洛伦兹变换的基础上，由于光速的有限值，对视觉效应考虑两方面的修正。
This is very useful for THR measurements of velocity changes for porous reflecting surface that require light source with great power.
这对于要求大功率光源的漫反射表面速度变化的测量是极为有利的。
The only way to change the velocity of the electrons was to use a different color of light.
要改变电子速度的唯一方法，是用不同颜色的光。
And the impacts on imaging target by the type and energy of light source as well as thickness and velocity of lint movement were also discussed.
研究了光透射成像系统中光源种类、光源能量、棉层厚度及皮棉运动速度对成像目标的影响。
Though PRP damaged the retinal pigment epithelium resulting in the reducing velocity of the transmission among retinal cells inside, it keeps the function of retinal light receptor cells.
PR P术后视网膜光感受器细胞的功能得以保留，但破坏了视网膜色素上皮，视网膜内各层细胞之间的电位传递速度减慢。
Though PRP damaged the retinal pigment epithelium resulting in the reducing velocity of the transmission among retinal cells inside, it keeps the function of retinal light receptor cells.
PR P术后视网膜光感受器细胞的功能得以保留，但破坏了视网膜色素上皮，视网膜内各层细胞之间的电位传递速度减慢。
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