周期

The qualitative analysis and numerical results show that a positive period-1 solution bifurcates from the semi-trivial periodic solution through a fold bifurcation, a positive period-2 so...

定性分析和数学模拟表明，半平凡周期解通过fold分岔分岔出正周期1解，正周期1解通过flip分岔分岔出正周期2解，再通过一系列flip分岔通向混沌。

Get two algorithm which mine partial periodicity patterns in time series and one algorithm which mimes asynchronous periodicity in time series.

本文主要建立了多粒度时态数据的表示和部分周期模式模型，获得了两个挖掘多粒度时态数据的部分周期算法，1 个异步周期算法，实验表面了所提出的挖掘算法对于发现周期是有效的。

That means using the measure close degree of area vector between each cycles and the first cycle to express the coincidence...

即利用各周期与第一周期的面积向量的测度贴近度表示重合度，定量地描述各周期内轴心轨迹的重合情况；在此基础上提取了反应重合度整体离散度的标准差；利用象限面积向量信息熵进行综合的、定量的评价滑动轴承各个周期内轴心轨迹的总体分布均匀性。

Cyclin-dependent kinases has effects on cell cycle by modulating function of eukaryon organism.The functions have been further studied in cell cycle and the process cell cycle,which will be beneficial to explain tumorigenesis pathomechanism and the new way of oncotherapy.

细胞周期素依赖性激酶是调节真核生物细胞周期的关键分子之一，深入研究细胞周期素依赖性激酶在细胞周期与细胞生长中的作用，对于阐述肿瘤发生、发展的病理机制以及肿瘤治疗的新途径具有重要的意义。

Eur J Haematol, 1996, 57:121～127.［3］ Enzan H, Takahashi H, Kawasaki M et al.Light and electron microscopic observation of hepatic hematopoiesis of human fetuses.

BFU-E在增殖分化过程中高表达周期蛋白E，并轻度上调周期蛋白D3，分化末期周期蛋白E和周期蛋白D3的表达迅速下调［14］。

Using data of the traffic flows in the current cyc le and the cycle before, the traffic flows in the next cycle may be estimated th rough the linear pre-estimation method and each phase time in next cycle is dete rmined with GA optimizing method.

通过对本周期及前一个周期的车流量进行实时测量，采用线性预估方法，对下一个周期的车流量进行预估，以最大通行能力为路口模型控制性能指标，从而确定下一周期的相位配时方案。

The foreign professional athletes of "Three rackets" sport always use the short-cycle of the annual cycle model; Chinese athletes still use the annual two-big cycle and multi-big cycle model in table tennis and badminton.

三拍项目国外职业运动员多采用中小周期的年度周期模式，乒乓球、羽毛球项目中国运动员仍然采用年度双大周期及多大周期的模式。

Of, the structural periodicity (the number of base pairs per turn of the double helix).

酶切周期与结构周期相符，酶切周期确定是结构周期的一种反映。

Firstly, the related parameters are distributed periodically in the falling film and their periods all equal to that of vacillation of fishing vessel. Secondly, the film tangent and radial velocity components are not zero because of vacillating additional inertia forces and furthermore, in one vacillation period, most parameters are distributed quite regularly in the tangent and radial directions. Thirdly, when other parameters are kept constant, the falling film absorption is enhanced if the amplitude or the period of vacillation is moderately decreased and this result conforms to the theoretical qualitative analysis. Finally, falling film absorption changes with the solution parameters at inlet and system pressure and the change trend is very similar to what happened in the static tube.

首先，降膜内相关参数分布具有周期性且周期等于摇摆振动周期；其次，摇摆附加惯性力使液膜沿吸收管周向和径向流速不为零，而且单位摇摆周期内各参数沿周向和管长方向分布比较规律；再次，当其他参数一定时，适当减小摇摆幅度和摇摆周期，液膜吸收能力将增强，这与理论定性分析相当吻合；最后，改变溶液入口参数及吸收压力，相应的吸收情况有所改变，其趋势与静止状态下的降膜吸收非常一致。

The iterativemethod and the method of averaging are combined with the method of coordi-nate transformation in this respect,and periodic and quasi-periodic solutionsof parametrically excited systems can be obtained rapidly and effectively.

这种方法将坐标变换法、迭代法及谐波平衡法相结合，可以有效迅速地求解周期参数激励系统的周期解和概周期解，并可以判断周期解的稳定性。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失