查询词典 cycles

In chapter 1,we find out a kind of two-parameter invariant cubic curve family of a certainquadratic system which is important one for studying the distribution of limit cycles.

第二章讨论一般的二次系统具有三次代数曲线同宿环的充要条件，针对问题，我们采用了具有双曲鞍点的二次系统的标准形，利用仿射坐标变换，我们把系统和曲线同时简化，使问题得到了完满解决。

Bifurcations of limit cycles of a cubic Kolmogorov s system are investigated at the positive equilibrium point .

研究了一类三次Kolmogorov系统在正平衡点处的极限环分支问题。

Chapter 5 concerns the number of limit cycles for a cubic Hamiltonian system under cubic perturbation.

第五章给出了只关于一个轴对称的三次哈密顿系统的分类，研究了三次哈密顿系统在三次扰动下的极限环的个数与分布。

Derive some new conditions on existence of eight limit cycles for a cubic system.

刘一戎。一类高次奇点与无穷远点的中心焦点理论。

This paper is concerned with the analysis of cubic system's equivariant symmetric structure and the investigation of limit cycles bifurcation for several classes of equivariant cubic systems.

主要研究三次系统的等变对称结构以及不同结构的三次系统的极限环分枝行为。

Chapter 4 investigates the number and distributions of limit cycles for a class of Kukles system, which also can be regarded as a class of reduced Kukles system under cubic perturbation.

第四章研究了一类Kukles系统的极限环的个数与分布，这里我们把所研究系统看作是三次扰动下的退化的Kukles系统。

We study cuspidal loop bifurcation、 Homoclinic or double Homoclinic bifurcation、 Hopf bifurcation and obtain the necessary conditions to generate limit cycles by using the coefficients of the expansion of the first Melnikov function.

利用一阶Melnikov函数的展开式的系数研究了尖点环分支、同宿分支、双同宿分支和Hopf分支，并给出了产生极限环的充分条件。

According to the changes in body temperature cycle, you can better control their own menstrual cycles.

根据体温的变化周期，你可以更好地掌握自己的生理周期。

Is a command cycler introduced in V7.5 — it cycles from one command to the next through the list, and guarantees the name/icon can change at each state

是 v7.5 引入的循环命令—循环执行列表中的命令，确保名称/图标可在每个状态下改变

It is shown that the shear strength of expansive soil decreases with increasing number of cycles and finally reaches to a constant state. The value and cyclic number of the constant state reduce with increase of amplitude of variation of water content.

研究结果表明：膨胀土抗剪强度随干湿循环次数增加而衰减，最终趋于稳定，强度稳定值与稳定时所需循环次数均随含水率变化幅度的增加而减小。

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