• The revelation triggered a wave of condemnation on the House floor, with Republicans j oining Democrats in calls to speed passage of new sanctions legislation.

    VOA: standard.2009.09.25

  • Alright. So, since we have these terms defined, we know the frequency and the wavelength, it turns out we can also think about the speed of the wave, and specifically of a light wave, and speed and is just equal to the distance that's traveled divided by the time the elapsed.

    好了,我们已经定义了,这些术语,我们知道了,频率和波长,现在可以来考虑,波的速度了,特别是光波的速度,速度等于它走过的距离,除以所用的时间,因为我们。

    麻省理工公开课 - 化学原理课程节选

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