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在超临界转速区，系统响应以混沌、周期分频和拟周期为主要运动形式。
But the main responses are chaotic, periodical and quasi-periodical motions in supercritical speed range.
存在不平衡量时，系统失稳可能产生拟周期分岔、倍周期分岔并可能导致混沌振动。
The instability of the unbalanced system motion may result in doubling period bifurcation, almost periodic motion and chaotic motion.
结果表明：在某些条件下，转轴系统有可能产生倍周期分岔、拟周期分岔并出现混沌振动。
The results show that the double period bifurcation, quasi period motion and chaotic motion can be found under some condition.
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