velocity of sound in air 空气中声音的速率
velocity of light or sound 光速或声速
correction of sound velocity 声速改正
measurement of sound velocity 声速测量
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According to certain research, the spread velocity of sound waves has nothing to do with the speed of the ripples.
研究表明,声波在同一介质中的传播速度和波源的速度无关。
Objective: Study the influence of parameters such as attenuation coefficient, velocity of sound, and temperature of medium on focusing sound field.
前言:目的:研究声衰减系数、声速、温度等媒质参数对声聚焦的影响。
The experiment shows: the change of the velocity of sound through normal density alit is regular and directly proportional to the strength of alit;
结果表明:在正常密度水泥石实验中一般声速反应较规则,基本与强度正相关;
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