The reluctivity matrix is obtained by using the trigonometric function transformation and the form of coefficient matrix is simplified.
该方法适用于任意阶多项式描述磁化曲线的非线性谐波电磁场问 
的求解，并提高了计算的精度。
The reluctivity matrix is obtained by using the trigonometric function transformation and the form of coefficient matrix is simplified.
该方法适用于任意阶多项式描述磁化曲线的非线性谐波电磁场问 的求解，并提高了计算的精度。
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