切换动态系统是一类重要的混合动态系统，它是由几个连续时间子系统或离散时间子系统及作用在其中的切换规则构成的。
As an important class of hybrid dynamical systems, a switched system is composed of several continuous time subsystems or discrete time subsystems and the switching signal among them.
离散傅里叶变换（DFT）在数字信号处理等许多领域中起着重要作用。
The Discrete Fourier Transform (DFT) plays an important role in digital signal processing and many other fields.
本文讨论动力系统在相关多激发作用下的随机振动离散分析方法。
A discrete analysis. Method for random vibration of structures under the excitations correlated in time domain is discussed in this paper.
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