这个设备的频率是50赫兹。

The frequency of this device is 50 hertz.

科学家测量了50赫兹的波。

The scientist measured the wave at 50 hertz.

该电台以100赫兹的频率广播。

The radio station broadcasts at 100 hertz.

音叉以440赫兹的频率振动。

The tuning fork vibrates at a frequency of 440 hertz.

信号发生器产生1000赫兹的音调。

The signal generator produces a tone of 1000 hertz.

电脑显示器的刷新率通常是60赫兹。

The refresh rate of computer monitors is usually 60 hertz.

科学家们使用赫兹来描述声波的频率。

Scientists use hertz to describe the frequency of sound waves.

技术员解释说，一千赫等于一千赫兹。

The technician explained that one kilocycle equals one thousand hertz.

人耳可以听到20到20,000赫兹之间的声音。

The human ear can hear sounds between 20 and 20,000 hertz.

你知道无线电波的频率是以赫兹为单位的吗？

Did you know that the frequency of radio waves is measured in hertz?