perturbation expansion method
perturbation expansion method
微扰展开法
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Taking higher frequency modes into account, an accurate expansion method based on the improved first-order perturbation is put forward, which can improve the precise of modes obviously.
为此，考虑到高阶模态的影响，提出了基于改进一阶摄动法的模态高精度展开法，算例表明，此方法能显著地改善摄动特征解的精度。
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