A method where the direction of light passing through a crystal is changed using a high frequency sound wave.
在那里光的指示过去的一种方法透过一颗晶片被使用高的频率声波改变。
Based on wave acoustics, the low frequency sound field is analyzed in this paper, and reciprocity is verified both theoretically and experimentally.
文章根据波动声学的观点对房间内的低频段声场做分析，理论和实验都验证了这个结论。
Frequency, current, voltage and pulse width of successive wave and intermittent wave were similar. Frequency, current, voltage and pulse width of sound electric wave changed continuously.
连续波与断续波（续波）的频率、电流、电压、脉冲宽度均相同，声电波的频率、电流、电压、脉冲宽度均为不断变化的。
The frequency of a sound wave, perceived as pitch, is the number of compressions that pass a fixed point per unit time.
声波的频率就是感觉的音调，是单位时间通过定点的压缩数目。
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。
A high pitched squeaky noise doesn't do it the force of the high frequency sound wave does.
像“叽吱”（划玻璃）一样的高音调的噪音就做不到震碎玻璃，而高频率的音波却可以做到。
Through the adjustment of sound wave related parameter, we find the relationship of sound pressure, frequency and cleaning effect, and the best frequency.
调节声波相关参数，得出声波的频率和声压对清灰效果的影响关系，并找到最佳频率。
Still having a kind of different software is launch frequency to arrive in 200 hertz through letting computer the sound wave of 600 hertz, drive mosquito.
还有一种不同的软件是通过让电脑发射频率在200赫兹到600赫兹的声波，驱赶蚊子。
Expenses for repairing and maintenance were reduced after the low frequency sound wave deashing device was used.
经采用低频声波清灰装置，减少了检修和维护的费用。
Sound wave consists of different frequency, and the sound wave's attenuation is variety in many different sediments.
不同频率的低频声波在底质中的吸收衰减各不相同。
The mechanism for low noise asphalt pavement to lower tyre noise is analyzed. A acoustical model is put forward. The resonance frequency of sound wave is analyzed with Helmholtz resonator model.
分析了低噪声沥青混凝土路面降低轮胎噪声的机理，建立低噪声沥青混凝土路面的声学模型，用亥姆霍兹共振器模型分析计算了声波的共振频率。
Because the ultrasonic wave has the directivity, the audible audio frequency demodulated from the interior of the ultrasonic wave also has the directivity and forms a directional audible sound.
一声频定向换能器，以定向发射超声波给接听者，其中该超声频段部分经空气自解调而还原为原音频信号。
Because the ultrasonic wave has the directivity, the audible audio frequency demodulated from the interior of the ultrasonic wave also has the directivity and forms a directional audible sound.
一声频定向换能器，以定向发射超声波给接听者，其中该超声频段部分经空气自解调而还原为原音频信号。
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