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- Progressively increasing the amplitude leads to the bouncing period doubling then quadrupling. 假如逐渐增大振幅，水滴跳动的频率将会加倍，继而再变成四倍。
- The bifurcation points, bifurcation diagram and three circumstances of period solution bifurcation leading to unstability are acquired for SFD rotor system, namely saddle node bifurcation, Hopf bifurcation and period doubling bifurcation. 数值计算得到了SFD 转子系统发生周期解分叉时的分叉点、分叉图及周期解分叉而失稳的 3种情况 :即鞍结分叉、Hopf分叉及倍周期分叉。 最后采用Floquet理论对SFD 转子系统的稳定性进行了分析。
- High nonlinearity existing in most chemical processes could result in complicated dynamic behavior, including multiple steady states, limit cycles, period doubling, torus and chaos. 中文摘要化工程序由于存在高度非线性，导致其经常出现复杂的动态行为，包括多重恒态、周期震荡、周期倍增、圆环面或甚至达到混沌状态。
- That period was a bright page in the history of Chinese literature. 那个时期是中国文学史上光辉的一页。
- Let us hope that the period of this injustice will be over soon. 让我们希望这个不公正的时期很快结束吧。
- Childhood is a period of rapid growth. 幼年是生长迅速的时期。
- The X Lounger is based on a single ray, traced along a periodic double curved surface. X懒人沙发是基于单线条，沿着曲面双层折叠而成的。
- He consulted the chronicles of the period. 他参考了这一时期的编年史。
- Simulation Study of Period Doubling Bifurcation in Buck Converters Using Harmonic Balance 利用谐波平衡法对Buck变换器中倍周期分岔的仿真研究
- He had to decide within a given period. 他得在一定时间内作出决定。
- She has a detailed knowledge of this period. 她对这段时期的情况了解地相当详细。
- In that period auto sales hit a14-year low. 这时期汽车销售量达到14年来最低水平。
- In this period, unemployment reaches record levels. 这段时间的失业人数又达到了创纪录水平。
- Which period of history are you studying? 你正在学哪一段历史？
- Influences of Period Doubling Bifurcation and Torus Bifurcation on the Voltage Stability of a Typical Power System 倍周期分岔和环面分岔对电力系统电压稳定性的影响
- Can you tell me the time period when it was stolen? 能不能告诉我大概什么时候被偷的？
- Chaucer wrote in the late mediaeval period. 乔叟写作的时代是中世纪末。
- She'll be away for an indefinite period. 她将离开一段时间，何时回来未定。
- This was the most difficult period of his life. 这是他一生中最艰难的时期。
- The meeting finally came to a period. 会议终于结束了。
