耦合使每个离子都具有了两个电子的特征频率。
Coupling associates each ion with both characteristic frequencies.
从基本特征方程式出发，理论上导出了两组非耦合的求解截止频率的方程式；
Based on the basic characteristic equation, two uncoupled equations for cutoff frequencies were obtained theoretically.
本文用特征值法研完了叶片频率失调及盘片耦合对叶栅颤振边界的影响。
The eigenvalue method is presented for determining the effects of blade mistuning and blade-disk on cascade flutter boundaries in incompressible flow.
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