This wave of excess density is sound.
这种过剩密度的波就是声波。
You can also see the wave form in the sound diary.
你也可以看到波的形式在健全的日记。
The frequency of the sound wave is controlled by the feedback signal of the system.
声光晶体由行波场驱动，声场频率则由系统的反馈讯号控制。
Sound is a form of wave energy that can travel through air.
声音其实就是声波，能在空气中行进的声波。
Detonation is propagation of a combustion-driven shock wave at or above the speed of sound.
爆轰是一种以冲击波为特征，以超音速传播的爆炸。
The voltage in the signal varies in direct proportion to the sound wave.
信号中的电压按声波比例变化。
The decline effect of fabric on sound wave has the chractaristic of frequency alternative.
织物对声波的衰减作用具有频率选择性。
The propagation equation of sound wave in gas liquid mixtures is given.
文章给出声波在气液混合物中的传播方程。
A sound wave is generated by a vibrating object.
声波是由振动的物体产生。
First, sound is the vibration of air, and it is a kind of wave motion.
首先，声音是空气的振动，是波动的一种。
Thee frequency, wave length, and speed of sound are closely related.
声音的频率、波长和速度三者是密切相关的。
Does the sound wave screen need to be often cleaned?
表面声波屏需要经常清洁吗？
Does the sound wave screen need to be often cleaned?
表面声波屏需要经常清洁吗？
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