eigen-frequency 固有频率
acoustic eigen frequency 声学固有频率
eigen circular frequency 固有圆频率
frequency eigen matrix 频率特征矩阵
Properties of free vibration were analyzed for simplified geared rotor, and the main factors of influence on eigen frequency were also analyzed.
针对齿轮耦合的简单平行转子系统，研究了固有振动的特点，分析了影响固有频率的主要因素。
When the response frequency is equal to the eigen-frequency of a derived system, harmonic resonance, super-harmonic resonance and combined harmonic resonance may occur.
当响应频率等于派生系统的固有频率时，将会出现主共振、超谐共振和组合共振现象；
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