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{{for|electronics|Flip-flop (electronics)|Multivibrator}}
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[[Image:Bistability graph.svg|thumb|upright=1.4|A graph of the [[potential energy]] of a bistable system; it has two local minima <math>x_1</math> and <math>x_2</math>. A surface shaped like this with two "low points" can act as a bistable system; a ball resting on the surface can only be stable at those two positions, such as balls marked "1" and "2". Between the two is a local maximum <math>x_3</math>. A ball located at this point, ball 3, is in equilibrium but unstable; the slightest disturbance will cause it to move to one of the stable points.]]
[[Image:Bistability graph.svg|thumb|upright=1.4|A graph of the [[potential energy]] of a bistable system; it has two local minima <math>x_1</math> and <math>x_2</math>. A surface shaped like this with two "low points" can act as a bistable system; a ball resting on the surface can only be stable at those two positions, such as balls marked "1" and "2". Between the two is a local maximum <math>x_3</math>. A ball located at this point, ball 3, is in equilibrium but unstable; the slightest disturbance will cause it to move to one of the stable points.]]
若一个[[动力学系统]]有两个稳定的平衡态，则该系统具有'''<font color="#ff8000"> 双稳性Bistability</font>'''<ref name="Morris">{{cite book
| last1 = Morris
| last1 = Morris
| first1 = Christopher G.
| first1 = Christopher G.
| url = https://books.google.com/books?id=nauWlPTBcjIC&q=bistable+bistability&pg=PA267
| url = https://books.google.com/books?id=nauWlPTBcjIC&q=bistable+bistability&pg=PA267
| isbn = 978-0122004001
| isbn = 978-0122004001
}}</ref> Something that is '''bistable''' can be resting in either of two states. An example of a mechanical device which is bistable is a [[light switch]]. The switch lever is designed to rest in the "on" or "off" position, but not between the two. Bistable behavior can occur in mechanical linkages, electronic circuits, nonlinear optical systems, chemical reactions, and physiological and biological systems.
}}</ref>。电灯的开关是一种常见的机械双稳态系统，其中的杠杆设计使开关停留在“开”或“关”的位置，而不是中间位置。机械系统、电子系统、非线性光学系统、化学系统和生物系统都可能具有双稳态。
In a [[conservative force]] field, bistability stems from the fact that the [[potential energy]] has two [[local minimum|local minima]], which are the stable equilibrium points.<ref name="Nazarov">{{cite book
In a [[conservative force]] field, bistability stems from the fact that the [[potential energy]] has two [[local minimum|local minima]], which are the stable equilibrium points.<ref name="Nazarov">{{cite book