用幂级数解法，理论上给出了该问题的级数解，同时考虑了应力波传播及反射对屈曲的影响。
The equation of lateral disturbance is used to analys the problem. The effects on the propagation and reflection of stress wave are taken into account.
随后针对冷却塔这个特殊结构，把微分方程进行了简化，并且采用幂级数解法解答出自振微分方程。
Then this paper simplified the differential eguation contraposing the cooling tower which is a special structure, and adopted the power series method to solve the differential eguation.
随后针对冷却塔这个特殊结构，把微分方程进行了简化，并且采用幂级数解法解答出自振微分方程。
Then this paper simplified the differential eguation contraposing the cooling tower which is a special structure, and adopted the power series method to solve the differential eguation.
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