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
曲线的非线性谐波电场问 
的求解，并提高了计算的精度。
阻率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曲线的非线性谐波电场问 的求解，并提高了计算的精度。
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