Fixing the amplitude and changing the frequency of forced simulation, we find an evolution procedure of the system through period doubling route to chaos.

固定外加激励幅值，通过改变激励频率可以明显看出由单一周期解经由倍周期道路通往混沌的演化过程。

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The possibility of chaos in S. cerevisiae culture system in CSTR was investigated by means of numerical computation under fixing the amplitude A and changing the frequency w of forced impulse.

以全混釜中酵母培养系统为对象，固定外加激励振幅值，改变激励频率，运用数值方法研究了强迫激励下乙醇连续发酵系统中存在混沌的可能性。

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Fixing the spectrum width of the weather echo signals, we change theirs mean Doppler frequency and filter them using regression filter. After filtering, we analyze the attenuation of them.

在天气回波信号谱宽固定的情况下，通过改变天气回波信号的平均多普勒频率，分析了回归滤波器对它的衰减情况。

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