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		一类 Duffing 型系统的不动点混沌和Fold/Fold 簇发现象及机理分析 1)
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			FIXED POINT CHAOS AND FOLD/FOLD BURSTING OF A CLASS OF DUFFING SYSTEMS AND THE MECHANISM ANALYSIS 1)
			 
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		 图 4. $\beta _1 = 0.1$, $\beta _2 = 6.257 5$, $\omega = 0.135 5$, $v = 0.3$ 时系统 (2) 的最大 Lyapunov 指数  | 
	
Fig. 4. Maximum lyapunov exponent of system (2) when $\beta _1 = 0.1$, $\beta _2 = 6.257 5$, $\omega = 0.135 5$, $v = 0.3$  | 
	
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