positive balance

• 正平衡

positive balance的用法和样例：

例句

1. A kind of predator-prey system with mutual interference is presented firstly, then the boundedness of the solution and the existence of positive equilibrium are analysized.
   摘要首先给出一类具有相互干扰的两种群捕食系统，分析了其解的有界性及正平衡点的存在性，证明了正平衡点是全局渐近稳定的。