sound waves

Sound waves, light waves, and radio waves have a certain frequency, or number of waves per second.

声波、光波或无线电波等都有特定的频率，或者说是每秒的波数。

A tuning fork transmits sound waves through the air.

音叉通过空气传播声音.

The sound waves from the plane can speed on ahead of the plane.

来自飞机的声波能跑到飞机的前面.

Sound waves will reflect back from a solid surface.

音波将会从坚固的表面反射回去.

Speech is made up of sound waves that vary in frequency and intensity.

语音是由不同频率和强度的声波组成的。

Sound waves cannot travel through a vacuum.

声波不能在真空中传播.

The reflected sound waves are then converted into a picture.

反射回来的声波然后转化成照片.

Sound waves will not travel through a vacuum.

声波在真空里不能传播.

During an echocardiogram, reflected sound waves outline the heart's structure completely.

在心回波图检查时, 反射回来的声波会勾画出心脏的整个结构.

We cannot see sound waves as they travel through air.

声波在空气中传播时,是看不见的.

Ultrasonic devices use sound waves of extremely high frequency.

超音波装置使用极高频率的声波.

The ear has a set of filaments to vibrate in resonance with incoming sound-waves.

耳朵里有一组细丝能和进入的声波产生共振。

You have read that sound makes air vibrate, thus making sound waves.

你已经知道,声音使空气振动, 从而产生了声波.

The sound waves of the voice could be diagramed as in B.

这个声音的声波如图B所示。

Like bats, they send out sound waves and make sense of their environment from the echoes they receive back.

像蝙蝠一样，它们发出声波，然后根据收到的回音来了解周围的环境。