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汉语拼音：shēng bō

能引起听觉的机械波。频率在20—20000赫之间，一般在空气中传播，也可在液体或固体中传播。

1. 能引起听觉的振动波，频率在20－－20，000赫兹之间。一般在空气中，也可以在液体或固体中传播，有反射和折射现象，在真空中不能传播。

   毛泽东 《在省市自治区党委书记会议上的讲话》二：“太阳的光射来叫光波，无线电台发出的叫电波，声音的传播叫声波。”

• He activated the door with the miniature sonic transmitter.

  他用微型声波发射器开启了门。

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

  这个声音的声波如图B所示。

• Sound waves will not travel through a vacuum.

  声波在真空里不能传播.

• Sound waves cannot travel through a vacuum.

  声波不能在真空中传播.

• 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。

• 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。

• 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。

• 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。

• You can't hear waves of such a high frequency.

  如此高频率的声波是无法听到的。

• Different notes have different distances between the tops of the waves.

  音调不同,声波波峰之间的距离也不同.

• This wave of excess density is sound.

  这种过剩密度的波就是声波.

• This firmly establishes the nature of the oscillations as low acoustic eigenmodes of the subphotospheric layers.

  这就确凿地证实了振荡的本质是次光球层的低频声波本征模式.

• The disturbance is sound wave, conforming to the laws of acoustic propagation in solids.

  这种扰动是种声波, 它遵从在固体中声波的传播规律.

• Suppose the speakers both emit a pure sinusoidal sound wave of constant frequency.

  假定两个扬声器都发射恒定频率的纯正弦声波.

• 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.