... velocity of flow临；流动速度 group velocity群速 particle velocity粒子速度；质点（振动）速度 ...
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group velocity dispersion 群速度色散 ; 的群速色散 ; 群速色散
Rayleigh group velocity 瑞利波群速度
frequency-dependent group velocity 频率相关群速度
Phase velocity and group velocity 相速度和群速度
Love wave group velocity Love波群速度 ; 勒夫波群速度
Compared with the case that the defect is non-dispersive, the dispersion of the defect layer leads to an ultraslow group velocity.
与包含无色散缺陷的光子晶体相比，缺陷的色散可导致极慢的群速度。
参考来源 - 期刊学术社区Theexperimental result reveals that the obvious contrast between the characteristic ofsuperluminal group velocity propagation speed and that of electricity or light in normalpropagation exists.
实验结果揭示了群速超光速传输速度特点与光和电的正常传输情况有明显的区别。
参考来源 - 关于频率信号异常传播速度的研究Light with the group velocity faster than the one in a vacuum is defined as fast light.
快光是指在某体系中光的群速度比其在真空中的传播速度要快。
参考来源 - 人工复合材料中的快光及慢光传播·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
N the speed at which energy is propagated in a wave. This is the quantity determined when one measures the distance which the radiation travels in a given time. In a medium in which the speed increases with wavelength the group speed is less than the phase speed, and vice versa 群速 [physics]
When the medium density increases (with more atoms), the slow group velocity decreases.
当介质的密度增加时（包含更多的原子），群速度就降低。
The reflection spectrum, time delay, and group velocity dispersion (GVD) of the gratings are analyzed.
并对此种光栅的反射谱，时延及群速度色散进行了理论分析；
To validate the theoretical analysis, a test system for group velocity delay was set up based on RF modulation.
为了验证理论分析，设计了射频调制法测试介质膜滤波器群速度延时的实验装置。
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