基于BBGKY方程，采用二阶扰动理论探索了可观物理量与扰动波矢的相互关系。
The relationship between physically observable quantities and perturbed wave vector is explored on the basis of BBGKY hierarchy equations and the second order perturbation theory.
在准理想的的色散管理系统中建立了非均匀扰动模型，研究了它们对二阶孤子传输的影响。
Models of periodically inhomogeneous perturbations are made reasonedly in a quasi-ideal dispersion-managed soliton system, their effects on second-order soliton propagation are investigated.
研究了系统固有频率受二值噪声扰动时，调制二值噪声驱动二阶过阻尼线性系统的随机共振现象。
The phenomena of stochastic resonance of an over-damped second-order linear system with modulated dichotomous noise are investigated.
最后，在恰当的假设条件下，获得了弱扰动映射的二阶邻接导数的上半连续和下半连续性。
Finally, under suitable assumptions, we obtain the upper semicontinuity and the lower semicontinuity of second-order adjacent derivatives for the weak perturbation maps.
仿真对比研究表明二阶滑模控制下的着舰导引系统有较好地抑制气流扰动的能力。
Second-order sliding mode controller and automatic carrier landing system is designed. The result of simulation research shows the system has good capability of air attenuation.
目前，直流电机双闭环调速系统模型主要有理想模型、二阶线性模型以及在不考虑负载扰动或恒负载情况下的非线性模型等。
The DLM model mainly includes the ideal model, the second-order linear model and the non-linear model in constant load or without considering the load disturbance, and so on.
目前，直流电机双闭环调速系统模型主要有理想模型、二阶线性模型以及在不考虑负载扰动或恒负载情况下的非线性模型等。
The DLM model mainly includes the ideal model, the second-order linear model and the non-linear model in constant load or without considering the load disturbance, and so on.
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