phase velocity of electromag-netic wave 电磁波的相平面速度
And the phase velocity of fast wave will decrease exponentially with frequency.
快纵波的相速度随频率的增大以指数形式减小。
The algorithm for solving phase velocity of transient Reyleigh wave was emphatically studied.
笔者重点对瞬态瑞利波相速度的算法进行了研究。
The studying results show that the classical elastic wave equation of spherical wave is only true for fixed amplitude phase and described only kinematic equation of phase velocity.
研究揭示经典的球面波波动方程只对固定振幅相成立，即只描述了相的运动方程，其波速为相速度。
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