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[光]光速
1、escape velocity───n.[物][天]逃逸速度；n.逃逸速度
2、terminal velocity───[力]终极速度；自由沉降速度；终速，自由沉降速度
3、cratering velocity───弹坑速度
4、velocity───n.【物】速度
5、velocity magnitude───速度大小
6、angular velocity───[力]角速度
7、muzzle velocity───初速；出口速度；初速度（弹出膛时的速度）
8、velocity profile───速度剖面（图），速度分布图，速度变化图
9、constant velocity───常速度，等速度; 恒速；匀速；等速度；恒速度
1、When measured along axes in different directions , the velocity of light transmission is anisotropic .───当沿着不同的方向的轴测量时，光的传播速度是各向异性的。
2、Upon substitution of these values, it is found that v is equal to the velocity of light.───在把这些值代入后，人们发现v就等于光速。
3、So it is only our assumption that a spacecraft can fly at the velocity of light or at a velocity faster-than-light.───“以光速或超光速飞行的宇宙飞船”目前仅是一种设想；
4、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。
5、The No-Shape-Substance is the propagating medium of light. The propagating velocity of light to the No-Shape-Substance space is fixed.───无形态物质是光的传播媒质，光相对于无形态物质空间的传播速度是衡定的。
6、Einstein's edifice is constructed on an experimental fact: that the velocity of light is independent of your own motion.───爱因斯坦的理论大厦基于这样一个实验事实：即光速与你自身的运动速度无关。
7、One of them is: the velocity of light is invariable.───一个前提是，光的速度不变。
8、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。
9、Every technical device is always developed to its limit and the ultimate speed for spaceships is the velocity of light.───每一个技术发明都会发展到极限，而宇宙飞船的最终速度是光速。
1、Such quantities as the velocity of light, c, Newton's constant of gravitation, G, and the mass of the electron, me, are assumed to be the same at all places and times in the universe.
2、We discover that the superluminal group velocity is an unstable phenomenon after the comparison between the superluminal group velocity and the normal velocity of light.
3、As the radius of the star is reduced the escape velocity increases until eventually it reaches the velocity of light.
4、By this structure, we reduce internal reflection loss effectively, and debase the group velocity of light transmission. Furthermore, we sum up theoretical analysis methods of photonic crystal.
5、Eventually, the star attained the velocity of light.
6、Einstein's theory links energy with mass and velocity of light.
7、The same relationship exists between particles and information when we come to talk about the velocity of light in general.
8、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.
9、According to phenomena observed during total solar eclipse, it can be pointed out that the velocity of gravitational field wave is equal to the velocity of light in vacuo.