Does the sound wave screen need to be often cleaned?
表面声波屏需要经常清洁吗？
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 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。
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。
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 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。
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。
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。
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。
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