The integrand exhibits slowly convergence and highly oscillatory, which leads to difficulties when attempting to evaluate the impedance matrix elements.
计算阻抗矩阵元素时，由于被积函数振荡性很强，收敛慢，难于计算。
The integrand exhibits slowly convergence and highly oscillatory, which leads to difficulties when attempting to evaluate the impedance matrix elements.
计算阻抗矩阵元素时，由于被积函数振荡性很强，收敛慢，难于计算。
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