legendre theorem 中文意思是什麼
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Firstly, in spherical coordinate system, the sovp formulation for the time - harmonic electromagnetic fields of the current dipole in conductive infinite - space is derived, using reciprocity theorem and transforming relations between special functions. then, selecting appropriate coordinate system, using superposition principle, the boundary - value problem of modified magnetic vector potential on the problem of a time - harmonic current dipole in spherical conductor is solved and analytical solution is obtained. finally, by means of the addition formulas of legendre polynomial and spherical harmonics function of degree n and order 1, the analytical solution in spherical coordinate system specially located is transformed into that in spherical coordinate system arbitrarily located
首先利用特殊函數間的轉化關系和互易定理推導得到了無限大導體空間中球坐標下時諧電流元電磁場的二階矢量位形式：然後利用疊加原理，選擇合適坐標系，求解了導體球中時諧電流元的修正磁矢量位邊值問題，得到了問題的解析解；最後依據不同坐標系下電磁場解的轉化原理，藉助勒讓德多項式和n次1階球諧函數的加法公式，將坐標系特殊安放時的電磁場解析解變換到坐標系一般安放時的解析解，給出了球內電場和球外磁場的並矢格林函數。 -
We also review parallel computing model, parallel programming model and the software engineering for numerical applications. ( 2 ) on spectral element method and parallel computing of 2 - d spectral element shallow water model i ) we put forward a hybrid - local - basis theorem, and give two kinds of local basis schemes fitting for both the chebyshev polynomials and the legendre case
（ 2 ）關于譜元素方法及兩維半隱譜元素淺水波模式的并行計算? ）依據切比契夫多項式和勒讓德多項式的計算特點，提出了一個混合局部基函數預備定理，給出了兩類混合局部基譜元素格式。
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