The identification results have indicated that the proposed method is an effective tool for modal parameters identification of time-variant linear system.
实验结果和理论计算结果比较表明：该方法为参数时变线性系统的模态参数辨识提供一条新途径。
DC-DC switching converter is a time-variant and non-linear dynamic system, and it is difficult to analyze and design.
DC开关变换电路是一个时变的、非线性的动态系统，它的分析与设计一直是一个难题。
The channel model is a linear time variant system.
信道模型为一线性时变系统。
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