着重分析了短延迟情况下输出场向混沌态的过渡，讨论了此情况下不出现高阶分岔的原因，并通过详细的数值计算把短延迟与无限大延迟两种情况联系起来。

The reason for higher bifurcations having not been found in small delay time is analyaised, and the routes to chaos in both small and large delay time are connected by numerical calculation.

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