稳定

There are two possibilities if we consider only the case that the positive equilibrium of the system p is hyperbolic.

该模型在我们感兴趣的区域里面存在一个双曲平衡点；并且这个平衡点要么是渐近稳定的，要么其稳定流形是一维的从而存在周期解。

In this thesis,the voltage stability boundary is the combined boundary which correspond to Saddle-node bifurcations and Hopf bifurcations.The closest Hopf bifurcation point is found through the proposed iterative method under the assumption that the Hopf hypersurface is continuous and convex.

因此在本论文中，在多维参数空间下，将稳定边界推广到鞍点和Hopf分岔点构成的混合稳定边界，探索性寻求Hopf分岔超平面的法向量，采用迭代算法求取系统发生最近振荡型电压失稳的负荷增长方式。

The questing for acidic middle-temperature electroless Nickel technology leads to the preferable prescription as follows:Proportion of Nickel Sulphate and Sodium Hypophosphate 0.36; Sodium Acetate 15g/L; Stabilizer A lmg/L(Stabilizer B Img/L for continual experiment); Composite complexing agent Lactic Acid 10ml/L and acetic acid 10 ml/L; Accelerator organic acid G 6g/L; pH value 5.0; Loading Capacity ldm2/L; Temperature 70C (Temperature 75C for continual experiment); Proportion of supplement for Nickel Sulphate and Sodium Hypophosphate 1:1.2; Testing the consumed ion of Nickel solution and supplement inspissations solution every 60min by the proportion of 15% fresh solution.

最后，通过研究得出最佳工艺配方为：硫酸镍与次亚磷酸钠的摩尔比为0.36；乙酸钠15g／L：稳定剂Almg／L(周期实验加稳定剂B10mg／L)；复合络合剂组合为乳酸10ml／L+冰乙酸10ml／L：促进剂为有机酸G6g／L；pH值为5.0；装载量为1.0dm~2／L；施镀温度为70℃(周期实验为75℃)：主盐与还原剂的添加比例1：1.2；每60分钟对镀后液进行镍离子浓度的测定并按镍离子的消耗量添加浓缩液，添加比例按开缸液的15％。

Based on two algebra Riccati equation method especially the structure of the system Hamilton matrix and system observability theory, the role of invariant zeros in constructing system reduced order controllers was given. That is, by the suitable selection of free parameters of the system H(subscript ∞) controller, some points which were symmetry with the unstable invariant zeros about the imaginary axis became the stable poles of the system controller which were not observable and could be reduced from the system, thus could get further reduced order controller.

基于2代数黎卡提方程方法，特别是系统Hamilton矩阵的结构特点和系统可观测性理论，论述了不变零点在构造系统降阶控制器中所起的作用，即通过选择控制器的自由参量，使某些不稳定的不变零点关于虚轴对称的点构成系统控制器不可观的稳定极点，从而实现了控制器进一步降阶。

Simons [30] proved the non-existence theorem for stable integral current in acompact Riemannian submanifold isometrically immersed into a unit sphere andvanishing theorem for homology groups. In 1984, Y. L. Xin [47] generalized theLawson-Simon\'s nonexistence theorem for stable integral current and vanishingtheorem for homology groups to the case of compact submanifolds in Euclideanspace, and gave several important applications.

Simons运用Federer-Fleming存在性定理[19]和几何测度论中变分技巧证明了单位球面中紧致黎曼子流形上稳定积分流的不存在性定理和同调群消没定理[30]。1984年，忻元龙将Lawson-Simons稳定积分流的不存在性定理和同调群消没定理拓广到了欧氏空间中紧致子流形的情形，并给出了若干重要的应用[47]。1997年，K。

Simons [30] proved the non-existence theorem for stable integral current in acompact Riemannian submanifold isometrically immersed into a unit sphere andvanishing theorem for homology groups. In 1984, Y. L. Xin [47] generalized theLawson-Simons nonexistence theorem for stable integral current and vanishingtheorem for homology groups to the case of compact submanifolds in Euclideanspace, and gave several important applications.

Simons运用Federer-Fleming存在性定理[19]和几何测度论中变分技巧证明了单位球面中紧致黎曼子流形上稳定积分流的不存在性定理和同调群消没定理[30]。1984年，忻元龙将Lawson-Simons稳定积分流的不存在性定理和同调群消没定理拓广到了欧氏空间中紧致子流形的情形，并给出了若干重要的应用[47]。1997年，K。

We hope to see a stable, harmonious and jointly developing neighborhood as well as a peaceful and stable Peninsula and Northeast Asia. This is in the common interest of China and other relevant parties including the DPRK.

我们希望有一个稳定、和睦、共同发展的周边，我们希望看到朝鲜半岛以及我们所在的东北亚地区实现和平与稳定，这不仅符合中国的利益，也符合包括朝鲜在内的有关各方的共同利益。

Logistic regression analysis revealed that depression was significantly related to hostility, introversion, emotionality, taking part in social communication and amusements inactively, alienation of family relationship, conflicts, gender, grade, rural and poor achievements,among which,emotionality was the most correlated to depression.

人格中具有敌意倾向、性格内向及情绪不稳定因素，家庭环境因素中不积极参与社交及娱乐活动、家庭关系疏远、矛盾性高以及女生、低年级、来源于农村和学习成绩差均与抑郁症状相关，其中情绪不稳定与抑郁症状关系最为密切。

In the full-scale aero-elastic model test, it is observed that there exist more than one interval of poor aerodynamic performance, and the non-symmetric erection sequence, while increasing the aerodynamic stability at the very places where aerodynamic performance of symmetric erection sequence is poor, performs worse in some other intervals with a vertical flutter phenomenon.

在全桥气弹模型的风洞试验中发现，采用对称架梁施工方法，在施工过程中会存在颤振稳定性最差的区间，并且这样的区间可能不止一个，而采用非对称架梁施工方法，固然在那些采用对称架梁施工时颤振稳定性较差的区间处提高了颤振稳定性能，但却在另一些施工区间中表现出比对称架梁施工更差的颤振稳定性能。

The universe is the one, infinite, immobile… It is not capable of comprehension and therefore is endless and limitless, and to that extent infinite and indeterminable, and consequently immobile.

宇宙是惟一的、无边无际的、稳定的……它不能被理解，因而无边无际、无始无终；在那种程度上，它是无限而不可决定的，从而是稳定的。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。