The electrostatic and magnetic neutralization model has been adopted in solving the initial value problem of the beam-plasma system to obtain the plasma response functions.
采用电荷中和及磁中和模型，求解了束-等离子体系统的初值问题，得到了等离子体的响应函数。
A new method via unstructured model is presented for analysing the system described by impulse response function and solving its optimal control problem.
给出了一个利用非结构模型求解、用脉冲响应函数描述的系统的分析和最优控制问题的新方法。
The displacement response variance of the rotor system under random excitation was investigated numerically by solving the variance equation.
通过求解方差方程，用数值方法对对随机激励作用下的转子系统的位移响应方差进行了研究。
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