并给出了模型表面压力随声压级及频率变化的规律。

Regularities of pressure on surface with sound pressure level and frequency are also given.

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当牙钻的频率变化时，装置的波形也会迅速改变以适应从而保持无声。

As the drill’s frequency changes, the waveform quickly adapts to maintain the silence.

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高稳定的激光可以产生极细的齿，这样可以非常精确的测量特定的频率或频率变化。

A highly stabilized laser produces very fine teeth, enabling highly precise measurements of specific frequencies or changes in frequency.

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We want to figure out if the harmony is changing, and if it is changing whether it's changing at a regular or irregular rate.

一是判断和声是否发生了变化，二是如果发生了变化，和声的变化频率是规则还是不规则的。

耶鲁公开课 - 聆听音乐课程节选

By regular rate we mean that the amount of time that each chord holds is exactly the same; every chord holds for the same length of time.

如果变化频率规则，那么和声中每个和弦持续的时间长度是完全相同的;,每个和弦都持续同样长的时间。

耶鲁公开课 - 聆听音乐课程节选

So that should mean that the energy that's transferred to the electron should be greater, but that's not what you saw at all, and what you saw is that if you kept the frequency constant there was absolutely no change in the kinetic energy of the electrons, no matter how high up you had the intensity of the light go.

所以这意味着转移到电子,上的能量也越大，但这并不是，我们观测到的现象,我们所看到的是,如果固定光的频率不变,不管光强如何变化,电子的动能没有任何变化。

麻省理工公开课 - 化学原理课程节选