查询词典 periodic

In the second chapter, we discuss the existence of unimodal periodic orbits for 2-D SISO relay feedback systems.

在第二章我们研究二维继电反馈系统单峰周期轨的存在性。

In the simulation process, a unit cell of the periodic structure is first adopted as our simulation domain.

在我们的分析上，先采用周期性单位结构。

Therefore, we have developed a numerically effective algorithm based on periodic unit cell method proposed by Bohbot-Raviv and Wang.

所以有必要发展新的高效的SCMFT新方法来预测和确定嵌段共聚物微相分离的形态结构。

It is easy to unsnap the grate to access the filter for periodic cleaning, as shown in the photo above.

很容易unsnap的炉排获得定期清洗过滤器，如上面的照片显示。

His methods recognized unsold goods and the periodic accounting of profits and losses.

他的方法辨能够确认未出售的货物和利润和损失。

In this paper, we firstly make some qualitative analysis to Lorenz critical chaotic system, and then lead it to the corresponding unstable equilibrium point and periodic orbits in terms of the linear state feedback approach. Then we make a lot of simulations which indicate this method to be feasible. Fractional-order system, as well as Lyapunov exponent, has been used as a powerful tool for the quantitative study of chaotic systems.

本文首先对Lorenz临界混沌系统进行基本定性分析，然后利用线性状态反馈方法将其制到相应的不稳定的平衡点与周期轨道上来，并证明了被控制的Lorenz临界系统是全局渐进稳定的，并对取得的结果作了大量的数值模拟，模拟结果证实该控制方法简单有效可行。

The feedback controls, including linear, speed, doubly-periodic function, hyperbolic function and trigonometric function are used to suppress chaos to one of the three unstable equilibrium. The Routh-Hurwtiz theorem is applied to derive the conditions of stability of the controlled system.

利用反馈控制方法，包括线性、速度、双周期函数、双曲函数和三角函数反馈控制方法将系统的混沌运动控制到稳定态，根据Routh-Huriwtz准则获得了系统达到控制目标时反馈系数所满足的条件。

However, the time-delay has no essential effect on the periodic solution and unstable solution.

而油膜力时滞对于系统的稳态同步周期解和失稳解，则没有本质影响。

A general unstable chaotic solution of the Duffing oscillator in a double-well with weak periodic perturbations is obtained by using the direct perturbation method in this paper.

利用直接微扰的方法求出了双阱中具有弱周期微扰的Duffing 振子混沌解的一般表达式。

We found that there is a V-shaped second threshold of quasi-periodic which agrees with our simulation result.

而从实验与模拟，我们都发现从稳定到不稳定间的第二阀值对腔长作图是一个V形的曲线。

This in turn requires sympathy and imagination:without which there is no capa city for moral thought.

这就需要同情心和将心比心的想像力，没有这两点就无法用道德观念来进行思考。

From the viewpoint of self-organization, rainfall and micro-landform are corresponding to the disarranged input and the rills are corresponding to the regular output.

其中，降雨及微地貌对应于自组织系统中的无序输入，而纹沟、细沟和沟网等对应于自组织系统的有序输出。