耀久九英英词典

phase velocity

P 开头单词

柯林斯词典

    phase speed (also phase velocity)

  • 1. N the speed at which the phase of a wave is propagated, the product of the frequency times the wavelength. This is the quantity that is determined by methods using interference. In a dispersive medium it differs from the group speed 相速度 (Also called wave speed, wave velocity)[physics]

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