查询词典 bifurcation

The effect of the angel between vessels and bifurcation ratio were taken into account,and the local Nusselt number at three typical radial angels and the mean Nusselt number on a section in the branching vessel were obtained.

用有限元方法数值模拟了血管分支结构内血液流动的三维速度场和温度场，得到了分支血管壁面3个典型径向角度的局部努塞尔数和血管截面平均努塞尔数沿管长的变化曲线。

Spatio-temporal symmetry-breaking of temperature field in a small spatially distributed Lindemann unimolecular chemical reaction-diffusion-heat conduction system was studied by means of linear stability analysis, bifurcation analysis, and computer numerical simulation.

运用线性稳定性分析、分支分析和计算机数值模拟手段研究了小尺度空间展布、伴有扩散和热传导的Lindemann单分子化学反应体系的温度场时空对称破缺。

Stability of the positive equilibrium and the existence and uniquity of Hopf bifurcation for a class general ecological model with delays are investigated.

研究了一类具有时滞的广义生态模型平衡态的稳定性与Hopf分支存在唯一性。

Through such a study, it is also shown that when the time delay is long enough such that the stability switches of the equilibrium of system halt, the bifurcation branches originated from the critical time delays cannot be surely stable or unstable in the whole solution space, that is, their stability depends on cases.

利用打靶法的数值结果说明了当系统平衡点不再发生稳定性切换时，源自这些临界时滞处的解支的稳定性在整个解空间的稳定性具有不可判定性，这也说明由多尺度法所得高阶近似判定的解支的稳定性事实上只表示解支在局部中心流形上的稳定性，而非在整个解空间中的稳定性。

Bifurcation diagram changed with different speed is drawn to analyze the course of the system from steady state to unsteady in order to research the influence of seal to the nonlinear characteristic of rotor.

根据给出的系统随转速变化的分岔图，描述系统由稳定到失稳的过程，分析系统中可能出现的各种运动，研究密封对转子非线性动力特性的影响。

Equivariant bifurcation problem; contact equivalent group; versal unfolding; stability; recognition

等变分歧问题；接触等价群；通用开折；稳定性；左右等价群；识别

The versal unfolding theorem obtained in this paper by using DA-algebras tools introduced by Damon not only includes many corresponding results but also cancels the stronger demand on the codimension of a bifurcation Problem in some of relevant references to establish more general unfolding theory.

本文第二章进一步研究在(来源：AB00c6C论文网www.abclunwen.com)接触等价群作用下上述等变分歧参数及其开折的稳定性问题，得到了这类分歧问题是稳定的等价于它是无穷小稳定的结论，并且用横截性条件刻画了这类分歧问题的稳定性。

Biological dynamic system; Degenerate equilibrium; Generalized normal sector; Periodic solution; Bifurcation; Versal unfolding

基础科学，数学，动力系统理论生物动力系统；退化奇点；广义正常区域；周期解；分岔；普适开折

Degenerate equilibrium; generalized normal sector; bifurcation; codimension; versal unfolding; heteroclinic loop.

基础科学，数学，数学分析退化奇点；广义正常区域；分岔；余维；普适开折；异宿轨

Equivariant bifurcation problem; contact equivalent group; classification; recognition; left-right equivalent group; versal unfolding; uniquiness; stability

基础科学，数学，概率论、数理统计等变分歧问题；接触等价群；分类；识别；左右等价群；通用开折；唯一性；稳定性

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。