最后对空储液罐的特征值问题进行了多达近万自由度的计算分析，得到了一些成果，其中有新的发现：（1）空储液罐的多波现象在无初始几何缺陷时依然存在，而且出现在低阶振型中；

In these results there are some new findings:(1) when there is not initial geometry defect, multi-waves phenomena still exist and are presented in low orders in vibrative mode shape;

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