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用矩方程的方法研究了非线性系统在随机激励下的响应，用牛顿迭代法得出该方程解的统计特性，列举了一些数值例子，指出在一定条件下的一些特殊现象
Using the method of moment equations to study the response of the nonlinear system under random excitation, the statistical properties of the solution are obtained by the Newton iteration method. Some numerical examples are given to show some special phenomena under certain conditions