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(a) The power spectrums of the dynamic system with
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(b) The power spectrums of the dynamic system with
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(c) The power spectrums of the dynamic system with
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(d) The power spectrums of the dynamic system with
Figure 9: The power spectrums of the dynamic system when , , , and . (The red color stands for the power spectrum of ; the yellow color stands for the power spectrum of ; the blue color stands for the power spectrum of ; and the green color stands for the power spectrum of .)