In the case of small angular displacement, the natural frequency of the corresponding damping-free linear system is obtained, which is consistent with the experimental observation.
在小角位移的情形下，可近似得到相应的无阻尼线性系统的固有频率，它与观测结果吻合。
The smallest characteristic value corresponds to the lowest natural angular frequency.
最小的特征值相当于最低固有角频率。
The smallest characteristic value corresponds to the lowest natural angular frequency.
最小的特征值相当于最低固有角频率。
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