稳定性条件

The numerical techniques developed here, including the high accuracy method of using expansions in orthogonal functions in normal direction and the effective algebraic mapping to deal with the problem of infinite region, can raise the calculation precision and the convergence velocity greatly.

文中所发展的方法，如，在法向上采用高精度的高阶谱方法和对无限区域数值问题的更为有效的代数变换处理等，提高了计算精度和收敛速度；同时，通过预估校正迭代法，使抛物化稳定性方程中重要的正规化条件得到满足，保证了数值计算的稳定。

Micka's equation modified is changed to some simple forms which can be used to examinatethe effect of several factors on stablity of oscillogram from quantitative analytical angles.

根据时滞长度（τ＿max，τ＿min）的相对大小，将复杂的修正后的Micka公式分解为各种特殊条件下的简单公式；并从定量分析角度讨论了影响示波图稳定性的主要因素；发现直流电位中包含有自然电位和直流、交流电流对其的贡献，提出了示波图调节的定量标准和方法。

Taking HPAM solutions as an example, the unsteady flow of power-law fluid in eccentric annuli with the inner cylinder reciprocating axially is calculated; the distribution of velocity, flow rate and stability parameter is obtained; taking HEC solutions as another example, the flow of second order fluid in eccentric annuli with the inner cylinder moving axially is calculated too; the distribution of velocity and stress is obtained; the effect of eccentricity and axial movement on stress distribution on the outwall of the inner cylinder is analysed.

在理论上，分别用二阶流体和幂律流体模型描述聚合物驱油井产出液的非Newton流变性；分别建立了双极坐标系下二阶流体和幂律流体在内管做轴向往复运动的偏心环空中非定常流的控制方程及边界条件和初始条件方程；建立了幂律流体在内管做轴向往复运动的偏心环空中流动的稳定性参数和流体在内管壁上的压力分布计算公式；建立了二阶流体在内管做轴向运动的偏心环空中流动的流体在内管壁上的压力分布计算公式。

It is necessary to store in sealed package to isolate the LiNiO product from HO and CO for keeping its storage performance.

因而单纯的LiNiO_2电极材料在潮湿的空气中具有比LiCoO_2更差的贮存稳定性，为了保证LiNiO_2的电化学性能，必须隔绝水分和二氧化碳，采用干燥密封条件。

Therefore,it is necessary to research diffusion equation for suspended sediment because it describes the sediment move process in the water body.The equation is a various coefficients second-order linear partial differential equa-tion,such equation under complex boundary condition is very difficult to get its analytical solution,while its numerical solution relative analytical solution is more easier and has the obvious superiority:simple,the computation convenience.but to get a kind of difference format which is good accuracy and stability is not easy.

泥沙扩散方程实际上是一个变系数的二阶线性偏微分方程，这样的方程在各种复杂边界条件下求解是十分困难的，求它的解析解在数学上存在着难以克服的障碍，无法求出其精确解，因此常用数值方法求它的近似解，相比较而言，数值方法有着明显的优势：即简单灵活、计算方便快捷，但要寻找一种精度高、稳定性好、计算方便的差分格式也并非易事。

The results show that a partial substitution of Co by a small amount of iron, copper and chromium is very effective in improving the electrochemical cycling stability in the La5 Alloy.

贮氢合金La4.60.2Co0.2具有满意的循环稳定性，它在0.2C放电条件下的最大放电容量为296 mAh／g-1，经过300次循环容量衰减仅21.8%。

In the dark conditions, the addition of citric acid could improve the stability of perilla pigment in green plum fruit wine.

在避光条件下，添加柠檬酸能提高紫苏色素在青梅酒中的稳定性。

He's a fantastic perimeter shooter with excellent form and good consistency.

他是一名很出色的外线射手，拥有优越的身体条件和很好的稳定性。

From the application it is found that there is a unique stable periodic solution to the differential-algebraic system.

在此基础上，给出了其周期解的存在性、唯一性和稳定性的保证性条件。

In order to maintain the system stability the constraint is such that the phase-angle difference between any two generating sources in the to-be-interconnected electrical power systems should not exceed a permissible value, The tie line is selected based on the minimum annual cost, with the costs of both the new tie line and the necessary network expansion in the original electrical power systems...

该模型以联合电力系统中各电源点之间相角差均不超过允许值作为保持系统静态稳定性的约束条件，在按年费用最小选择联络线方案时，同时计及了新建的联络线和原有电力系统中网络的扩建。文中还给出了某两个电力系统联网的分析计算结果。

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。