稳定

At the first stage, the volatile contained in fibrous matter was released, and then the released volatile matter was combusted continuously; at the second stage, the fixed carbon of fibrous matter was burned, and pyrolysis and combustion of the polymer matter happened at the same time.

在第一个阶段，挥发性、不稳定的物质包括纤维物会分解或挥发，然后分解的不稳定物质会持续的燃烧；在第二个阶段，稳定的含碳纤维物燃烧，并且，聚合物的高温分解和燃烧发生在同一时间。3。

But the idea that the elements of instability are the root of diversity runs counter to one of the hoariest dictums of environmentalism: that stability begets diversity, and diversity begets stability.

不稳定的元素是多样化的根源，这种想法与一条古老的环境学格言背道而驰：即稳定产生多样化，多样化产生稳定。

The following exciting results are revealed: 1 When considering the influence of some nonlinear elements such as hard-limit of exciters, the effects of some devices such as Power System Stabilizer and Static Var Compensator which can introduce positive damping in power system, the reasonability of system parameter values in simulation, the SNB surface and HB surface on the boundary of SSSR will turn close to each other and even coalesce together; 2 Under some conditions, coupling between slow exciters and shunt capacitors will bring negative damping in power system dynamics, which increases the possibility of oscillatory instability. So the power system with mass shunt compensators is easily subjected to the oscillatory instability. In recent years, chaotic phenomena of power system have been reported many times. Some simulation studies even found chaos existing inside the power system SSSR. In this dissertation, chaotic phenomena in power systems are thoroughly studied in order to make clear the relation of chaos and SSSR. The following results are derived: 1 Based on Li-Yorke Theorem and their definition on the chaos, the existence of chaos in power system is verified; 2 Three possible routes of causing chaos in power system are found and deeply investigated. They are route of cascading period doubling, route of directly initial energizing and route of torus bifurcation (or quasi-periodicity). The latter two routes are investigated for the first time in power system stability studies; 3 When the stability conditions of chaos are broken, it is found they can lead to voltage collapse, angle divergence, or voltage collapse with angle divergence simultaneously.

针对在电力系统小扰动稳定区域内可能存在混沌吸引域的有关报道，本文深入研究了电力系统混沌现象的出现途径和与系统失稳模式之间的关系：1利用Li-Yorke定理和Li-Yorke的混沌定义，从理论上证明了电力系统混沌现象的存在性；2发现了电力系统中导致混沌出现的三种可能途径：倍周期分岔导致混沌、初始能量直接激发混沌和经由环面分岔导致混沌，并对后两种新发现的途径进行了较为细致的研究；3发现了混沌极限环破裂导致电压崩溃、角度失稳以及电压崩溃和角度失稳同时出现的现象，其中混沌极限环破裂导致系统角度失稳和电压崩溃及角度失稳同时出现的现象均属首次报道；4证明由微分-代数方程描述的系统模型，其小扰动稳定域的边界只包含HB、SNB和SIB三种分岔界面，在SSSR的内部和边界上，均不可能存在会导致混沌的点，从而将混沌现象排除在小扰动稳定域的研究之外，简化了后者的研究工作。

In the IEEE 50 generators test system, the proposed on-line voltage stability monitoring method is tested, the recursive square-root least squares filter with a forget factor is applied to track the parameters, and the results indicate that it can identify the critical bus effectively so as to realize on-line voltage stability monitoring.

将提出的电压稳定在线监测方法在IEEE 50机测试系统进行了仿真，参数辨识采用递推的带遗忘因子平方根最小二乘算法，结果表明它能有效地识别出电压稳定薄弱节点、实现电压稳定在线监测。

This paper analyzed the state of arts of the research on voltage stability for AC/DC system in detail, expecially for MIDC system.. According to the problems of voltage stability in MIDC system, the authors pointed out the issues that should be furth

本文对交直流输电系统电压稳定分析的研究现状进行了归纳和分类，介绍了用于交直流输电系统电压稳定分析的方法，特别针对多馈入交直流系统电压稳定问题，探讨了今后的研究方向。

In order to study the change of the thickness of gas hydrate stable zone and its effect on environment, 35 spots from four key areas in the southern South China Sea were selected to calculate it based on relative equation and program.

为了研究南海南部天然气水合物稳定带厚度在这个过程中的变化情况及其对环境的影响，我们利用相关的计算公式，并编制了计算稳定带厚度的程序，在南海南部的南沙海槽、曾母盆地、巴拉望盆地和苏禄海等四个重点海域选取了35个点进行末次盛冰期及目前稳定带厚度的计算。

Experimental results show that PDS is dispersed in PP matrix as spherical globules being in size of the order of 10-1 μ when content of PDS is in the range of 0.1% to 1%.

对于高分子稳定剂来说，研究它和被稳定的高分子之间的相容性以及它在其所稳定的高分子中的分散性是十分重要的。

The value of TEF shows the relative position of the point at the moment compared with the stable equilibrium one during power system dynamic process and therefore can be used as the assessment of TCSC stability control.

暂态能量函数法是源于Lyapunov稳定理论的直接法，它用系统的状态变量描述了故障时及故障后不同时刻系统的暂态能量，其值体现了某一时刻系统与事故后稳定状态之间的偏离度，可以作为TCSC稳定控制的指标。

From middle 1950s to the end of 1980s, we have been in charge of the buying,selling, distributing and storing of pork, beef, mutton, poultry and eggsas well as regulation of this industry, hence made great contributionto the development of national economy and stabilization of the meat market.Since the functional transformation in 1989, CNFG has been selffinanced under market principles. Meanwhile, we have been entrustedonal meat market basing on our efforts to realize self-development as well as the retainment and increase of value in state-owned assets. We are doing our best when dealing with emergency and stabilizing market. Time has also challenged our quick response ability during the snow disaster that massively disrupted transportation in south China earlins in May. Stored meats have been transported to the disasters-plagued areas in the fastest speed and market has been stabilized.

从五十年代中期到八十年代末，我部负责国内猪牛羊肉禽蛋产品购销调存及行业管理，对发展国民经济、保证肉类市场稳定做出了重要贡献。1989年完成职能转变后，除按照市场原则从事经营并自负盈亏，在努力实现行业发展和国有资产保值增值的基础上，接受政府部门委托，继续承担国家肉类市场宏观调控任务，为国家应付突发事件和稳定市场继续做出应有的贡献。2008年，我们经受住了南方低温雨雪冰冻灾害和汶川大地震两次历史罕见灾难的考验，在国家和人民需要的时候，迅速反应、立即行动，很好地完成了向受灾地区调运和投放储备肉的任务，维护了灾区市场稳定。

From middle 1950s to the end of 1980s, we have been in charge of the buying,selling, distributing and storing of pork, beef, mutton, poultry and eggsas well as regulation of this industry, hence made great contributionto the development of national economy and stabilization of the meat market.Since the functional transformation in 1989, CNFG has been selffinanced under market principles. Meanwhile, we have been entrustedonal meat market basing on our efforts to realize self-development as well as the retainment and increase of value in state-owned assets. We are doing our best when dealing with emergency and stabilizing market. Time has also challenged our quick response ability during the snow disaster that massively disrupted transportation in south China earlins in May. Stored meats have been transported to the disasters-plagued areas in the fastest speed and market has been stabilized.

从五十年代中期到八十年代末，中国食品公司负责国内猪牛羊肉禽蛋产品购销调存及行业管理，对发展国民经济、保证肉类市场稳定做出了重要贡献。1989年完成职能转变后，公司除按照市场原则从事经营并自负盈亏，在努力实现企业发展和国有资产保值增值的基础上，接受政府部门委托，继续承担国家肉类市场宏观调控任务，为国家应付突发事件和稳定市场继续做出应有的贡献。2008年，我们经受住了南方低温雨雪冰冻灾害和汶川大地震两次历史罕见灾难的考验，在国家和人民需要的时候，迅速反应、立即行动，很好地完成了向受灾地区调运和投放储备肉的任务，维护了灾区市场稳定。

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。