...现象，不仅在 2 1 k K = 发生主频共振 (primary resonance)，而且在 2 2 k K = 也会发生二谐 波共振 (second-harmonic resonance)。
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The second-harmonic resonance is the distinctive features of nonlinear oscillation. When the second-harmonic resonance occurs, the oscillation system can be excited into resonance by the external excitation whose frequency is far from the innate frequency of the system.
次谐共振是非线性振动系统特有的现象,在发生次谐共振时,系统可以被远大于或远小于固有频率的激振力激起强烈的共振。
参考来源 - 环形薄圆板的次谐共振·2,447,543篇论文数据，部分数据来源于NoteExpress
The principal resonance of a second-order stochastic oscillator under combined harmonic and random parametric excitations is investigated.
研究了二阶线性系统在谐和与随机噪声联合作用下的主共振响应和稳定性问题。
The second-order harmonic can change the Normalized Impedance of the resonance cavity, and cause the distortion of Frequency Response;
二次谐波可使谐振腔归一化阻抗发生变化，导致强声发生器频率响应曲线失真；
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