英语词汇“group speed”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	group speed
释义	group speed group speed or group velocity n (General Physics) physics 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
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group speed