本文运用约化摄动法分别研究了冷尘埃等离子体、热尘埃等离子体、磁化尘埃等离子体和尘埃等离子体晶体中的尘埃声孤波现象，着重考虑尘埃颗粒大小分布对尘埃声波的影响。
In this paper, the effect of dust size distribution for the dust acoustic solitary wave (DASW) in the cold dusty plasma, the hot dusty plasma, the magnetized dusty plasmas and the dusty pl.
利用变换和摄动法将非线性位移方程线性化，得到了近似边值问题。
By using the transformation and the perturbation method, the nonlinear displacement equations are linearized, and the approximate boundary value problems are obtained.
因此许多学者提出了各种求解反问题的方法，比如脉冲谱方法，最佳摄动量法，蒙特卡罗方法，各种优化方法和正则化方法等。
So various methods are proposed by scholars to solve these problems, such as pulse spectrum method, the best perturbation method, Monte Carlo method, optimized and regularization method.
用线化法，权残法和插值摄动法相结合的方法求得了一类有正阻尼的强非线性振动问题的近似瞬态解，精度好。
In this paper, using the interpolation perturbation method, the authors seek to solve two classes of weakly nonlinear oscillations.
用线化法，权残法和插值摄动法相结合的方法求得了一类有正阻尼的强非线性振动问题的近似瞬态解，精度好。
In this paper, using the interpolation perturbation method, the authors seek to solve two classes of weakly nonlinear oscillations.
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