The water flows at about 1.5 metres per second.

水的流速约为每秒1.5米。

《牛津词典》

Regular repeating actions such as sound waves, light waves, or radio waves have a certain frequency, or number of waves per second.

有规律的重复活动如声波、光波、无线电波都有一个特定的频率，或者说是每秒的波动次数。

《柯林斯英汉双解大词典》

We can invent computers capable of processing ten million calculations per second.

我们可以发明每秒能处理一千万次计算的计算机。

youdao

thirty-six feet per second up. Very smooth, very quiet ride."

VOA: special.2009.07.15

And then we have c, the speed of light, 2.998 times 10 to the 8 meters per second.

然后我们知道光速等于，2，998乘以10的8次方米每秒。

麻省理工公开课 - 化学原理课程节选

So, if something cycles through five wavelengths in a single second, we would just say that the frequency of that wave is five per second.

如果一个东西在一秒,内经历了五个波长，我们就说这个波的,频率是每秒5次。

麻省理工公开课 - 化学原理课程节选

Just unbreakable 60 frames per second animation of hundreds of 3D surfaces with physics.

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All movies are displayed in 1080p resolution at 24 frames per second, the cinematic gold standard.

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Today, optical fibers can transport 10 billion bits of data per second on a single wavelength.

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