The simulation results indicate that the spatial Fourier analysis is a better method to determine the MHD perturbation mode in tokamak.
比较结果表明，用空间傅里叶分析法识别托卡马克中的MHD扰动模式是一种可以行之有效的方法。
The paper used singular perturbation method to separate the Two-link Flexible Manipulator system into slow sub-system and fast sub-system and designed controller using Sliding Mode Co.
本文中采用奇异摄动方法将双连杆柔性机械臂系统分解为慢变和快变两个子系统，并对慢变子系统采用滑模控制方法设计了控制器。
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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