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。

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Contrast, spatial frequency, presentation time, moving velocity and phase reversal frequency of each grating are controlled independently.

每组光栅的对比度、空间频率、显示时间，移动速度和反相频率能单独控制。

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The amplitude taper and phase correction are obtained by redistributing energy and changing phase velocity in different region inside the horn respectively.

在喇叭内部不同区域中重新分配能量和改变相速来获得幅度锥削和相位校正。

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For example during the ingest phase, the Big Data solution should be capable of gulping massive volumes of data at high velocity.

FORBES: Big Data In the Enterprise: A Lesson Or Two From Big Brother