diplophyll
二重傅里叶级数 double fourier series
二重傅立叶级数 double Fourier series
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利用分离变量法和二重傅里叶级数的方法,得到了矩形膜的受迫振动初边值问题的解。
By using separation of variables and double Fourier series, we obtain a solution to the initial-boundary value problem of the forced vibration of this rectangular membrane.
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