Body isn't only a natural existence of the anmality, but also a practical mode, perception method and expression system which contains history, cultures and society gene.
身体不仅是一个自然存在物，更是一个蕴含丰富历史、文化和社会基因的实践模式、知觉方式以及表达系统。
Using this method not only the natural frequencies, mode shapes, dynamic responses but also the whirl orbits of the rotor system can be obtained.
用本文提出的方法，不仅可以求得系统的固有频率、振型、动态响应，还可以模拟轴上各点的涡动轨迹。
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。
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