This confirms the accuracy of the perturbation method which we adopted.

这就证明了我们采用的摄动法有较好的准确性。

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The rotating Angle and vibration of rigid-flexible coupling are solved by the perturbation method.

对刚柔耦合回转角和刚柔耦合振动的微分方程，则通过摄动法求解。

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Applying the perturbation method, the nonlinear evolution equations are expanded as multi-order approximate equations.

利用小扰动方法对非线性演化方程作展开得到原始方程的各级近似方程。

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