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.
富含多种微量元素能迅速修复粗糙之角质细胞，提供皮肤脂质，收敛毛。
Contains multiple trace elements that can quickly repair rough keratose cells, provides skin lipid and constringes pores.
结果表明，在所有情况下，与低阶元素相比，高阶元素均显出有较好的收敛性。
The results indicate that the higher order element exhibits better convergence than the lower order element in all cases without imposition of natural boundary conditions.
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