The natural longitudinal or torsional vibration of a wedge-shaped shaft is studied with perturbation method. The vibration mode function and the frequency characteristic equation are derived.
采用摄动法研究了楔形杆轴的固有纵扭振动，并且推导出了其固有纵扭振动的振型函数及频率特征方程。
The method to solve the field longitudinal distribution function in the resonators is investigated.
探讨了腔内各谐振模式场的纵向分布函数的求解方法。
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