稳定性

The nonparallel linear stability of the two-dimensional and three-dimensional disturbance waves are studied by the parabolized stability equation which is developed in recent years and the local method based on the Landau expansion.

本文从Navier-Stokes方程出发，导出不同形式的流动稳定性方程，包括采用小扰动理论得到的Orr-Sommerfeld方程、基于流向慢变特性而得到的抛物化稳定性方程以及在一小范围内计算的局部法方程。

It is shown that using PSE to study nonparallel stability, especially to study nonlinear stability of nonparallel flow is much more effective. The result, which is comparable with Direct Navier-Stokes Simulations , can be obtained, and the time needed is lessened greatly.

采用PSE方法对于研究非平行流稳定性问题，特别是非平行非线性的稳定性问题极为有效，可以获得与直接数值模拟(Direct Numerical Simulations，DNS)精度相当的结果，而所需计算时间则成数量级地减少。

Finally, we examine the oasis ecosystem stability evaluation indicator system, and evaluate the stabilities of 10 oases in Xinjiang.

最后对绿洲生态系统稳定性评价指标体系进行了研究，并对新疆10个绿洲的稳定性进行了评价和分析。

Based on the fact that the competition in Chinese electric market is oligopolistic, in this paper, we first established a static multi-player oligopoly model and then analyzed the Nash equilibrium and its stability. After that, we established a dynamic multi-player oligopoly model and analyzed its stability.

针对目前我国对电力市场多寡头竞争的研究还不是很深入的情况，在完全信息下，首先建立了多寡头静态模型，找出其纳什均衡解，并进行了稳定性判断；然后建立多寡头动态模型，利用雅可比矩阵的性质判断出系统的稳定性。

Products have good thermal stability anddecomposition temperature above 200℃; Selected lauryl amine as a case, then optimizedthe synthesis conditions by orthometric trial, and obtained the best synthesis technichs: themolar ratio of 1: 2.1, the reaction temperature was controlled at 80℃and the reaction timeof 16 h, reaction to the solvent n-propanol.

并对其热稳定性进行了分析，合成产物具有较好的热稳定性，分解温度都在200℃以上；以十二胺为例，用正交实验法优化合成条件，获得最佳合成工艺为：摩尔配比为1：2.1，反应温度控制在80℃，反应时间为16h，反应所用的溶剂为正丙醇。

Results A good stability can not he obtained with wire osteosynthesis in the treatment of midface fractures.

结果 钢丝骨间结扎不能获得良好的稳定性，而小钛板坚固内固定则可重建面中份骨骼的支柱结构，获得足够的三维稳定性和重建理想的面部外形。

The effect of viscous damp on parametrical rolling stability is analyzed with the modified strained parameter method.

根据Floquet理论和方程的稳定性过渡曲线，比较2种不同改进变形参数法的求解精度，利用改进变形参数法来分析黏性阻尼变化对参数横摇稳定性的影响。

After referencing the specification of the national standard GB/ T11648-89, according to the petroleum industry condition, the torsional vibration, pendular vibration, exciting force self-synchronizing and stability of synchronizing,the stability of vibrate synch ronous transmission of two and more long vibration motors are tested. All of above testing parameters will replenish the blank of both product development and quality test measure of this type of motors both here and abroad.

参阅国家标准GB／T11648-89的技术要求，并针对石油现场的实际条件，本课题对两台和多台隔爆长形振动电机的扭振、摆振、激振力大小，自同步性和同步状态稳定性，振动同步传动稳定性等技术参数进行了模拟动态测试，而这些新增设技术参数的测试均是填补国内外此种新型电机产品研制开发和质量检验测试的技术空白。

The kind and amount of antioxidant s and light stabilizers which affected the stability of colorless rosin pentaerythritol ester were studied.

以无色松香季戊四醇酯的热稳定性、耐候性和储存稳定性为考察指标，对抗氧剂和光稳定剂的稳定化作用进行了研究。

The kind and amount of antioxidants and light stabilizer s which affected the stability of colorless rosin pentaerythritol ester were studied.

以无色松香季戊四醇酯的热稳定性、耐候性和储存稳定性为考察指标，对抗氧剂和光稳定剂的稳定化作用进行了研究。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。