In chapter two, wave motion equation, sound energy, sound energy flux density, sound intensity and its scaling method and the theorem of two-microphone sound intensity have been introduced.
第二章介绍波动方程、声能、声能流密度、声强及度量方法、双传声器互谱声强测量原理。
A 5 line fitting method was established to determine the scaling region of the power spectrum of the log intensity of a laser beam in the turbulent atmosphere.
以5线段拟合法建立了确定湍流大气中激光对数光强起伏频谱的无标度区间的方法。
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