一个软光学声子模来源于在铌-氧平面内的三重简并对称弯曲振动。
A condensed soft optical phonon mode originates from the triply degenerate symmetric in-plane O-Nb-O bending.
随着层间阳离子离子势的增大，其层间水脱失温度增高，层间水的对称伸缩振动频率降低，弯曲振动频率提高。
With the increase of ionic potential, the dehydrated temperature and the bending vibration frequency of interlayer water increase, and strength vibration frequency decreases.
对一类轴对称圆环的面内弯曲振动进行了分析计算，给出了圆环面内弯曲振动固有频率表达式。
The flexural vibration of a circular ring that is of axis symmetry is analyzed and calculated, the solid frequency expression of the flexural vibration is obtained.
特别地，还会出现多种高阶模态振动共存的非对称复杂弯曲变形等现象。
In particular, complex bend distortions for such a long riser are observed due to multi-modal vibration responses with high orders.
特别地，还会出现多种高阶模态振动共存的非对称复杂弯曲变形等现象。
In particular, complex bend distortions for such a long riser are observed due to multi-modal vibration responses with high orders.
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