The natural frequency is a critical parameter of structure vibration; it is the foundation to investigate the dynamic response of composite beam.
而结构动力特性中的自振频率是反映结构自身特点的重要参数，是研究组合梁动力学问题的基础。
The approximate formulas for the natural frequency of bridge piers with shallow foundation, pile foundation and sunk shaft foundation were derived by the Rayleigh Method.
采用瑞利法，导出了计算浅平基桥墩、桩基桥墩及沉井基础桥墩基频的近似公式。
The natural frequency is an important parameter of building, it reflects the structural dynamic feature and lays the foundation of seismic design.
频率是结构固有的重要参数，它反映了结构的动力特性，也是结构抗震设计的重要基础。
Supported by Hebei Natural Science Foundation under grant No. 503624, The high frequency circuit model of the transformer windings in GIS is researched in this paper.
本文结合河北省自然科学基金项目“特快速瞬态过电压对变压器的影响”（项目编号503624），重点研究了GIS中变压器绕组高频电路模型的建立方法。
Supported by Hebei Natural Science Foundation under grant No. 503624, The high frequency circuit model of the transformer windings in GIS is researched in this paper.
本文结合河北省自然科学基金项目“特快速瞬态过电压对变压器的影响”（项目编号503624），重点研究了GIS中变压器绕组高频电路模型的建立方法。
应用推荐