1)point of no return,不能返回临界点2)not-return boundary,不返回边界3)point of no return,不可返回点4)There can be no going back.,不可能返回.5)crash point; critical point,临界点<能>6)snap-back repeller,返回扩张不动点
用法例句
This paper is concerned with chaos of a class of delay difference equations by employing the snap-back repeller theory.