Based on the normal mode analysis, the characteristic equations were deduced from the perturbation equations of fluid mechanics.
基于模态分析，从流体力学扰动方程组出发，推导出了特征方程。
Based on the normal mode analysis, the characteristic equations were deduced from the perturbation equations of fluid mechanics.
基于模态分析，从流体力学扰动方程组出发，推导出了特征方程。
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