The second theorem defines the Equivalent Magnetic Charge and the Moment of Current Density.
第二个定理定义了“等效磁荷”与‘电流密度矩’。
2
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。
3
With new Central Limit Theorem, convert the uniform random number's probability density using probability density Converter, then add all generated random Numbers.