positive stability

Chinese profound moral culture, filial piety in traditional society is always in the first pan-German and German position, several thousand years of maintaining family harmony, social stability and economic development have played a positive role.

中华博大精深的道德文化中，孝道文化在传统社会始终处于首德地位，几千年来对维系家庭和谐、社会稳定以及经济发展都起到了积极作用。

Sustainable economic growth requires to keep a positive real saving rate and the stability of important environment function.

可持续经济增长的核心是要协调经济增长与环境可持续的矛盾，在经济层面，可持续经济增长要求一个经济的真实储蓄率为正，在环境层面则要保持重要的环境功能的稳定性。

The global asymptotic stability of the positive equilibrium of the model with one population is considered by using the monotone theory of functional differential equations.

首先利用泛函微分方程的单调理论分析了单种群chemostat模型正平衡点的全局渐近稳定性。

The results showed that both the compound stabilizers of LDHs/ lead salts and LDHs/ organotin had positive synergic effect on thermal stabilization of PVC, and the PVC filled with LDHs/ organotin exhibited the best thermal stability.

结果表明：镁铝水滑石分别与铅盐、有机锡进行复配均具有较好的协同效应且后者对PVC的稳定效果更好。

We respectively obtain sufficient conditions of no limit cycle and the global stability of positive equilibrium point by using of Dulac function method and Liapunov function method.

运用Dulac函数法和构造恰当的Liapunov函数法，分别得到了系统无环的充分条件和正平衡点全局稳定性的充分条件。