The Rational solution has a positive impact on many of the other parameters as well, but for the sake of simplicity, this model only deals with this subset.
Rational解决方案也对很多其它参数有正的影响，但为了简单化，模型仅仅处理这个子集。
This has to be part of the solution to our pensions crisis and, in fact, can be a very positive model for the future.
事实上，这必须是解决我们退休金危机的一部分，因为它将是一个对未来非常有积极作用的模式。
If the coefficients satisfy additional conditions, every positive solutions of the model asymptotically approach the unique strictly positive periodic solution of the corresponding periodic system.
对系数附加条件后，该模型的任意正解渐近稳定地趋于对应周期系统的正周期解。
An epidemic SIS model whose coefficient is almost periodic functions is studied. A sufficient condition of existence and uniqueness of positive periodic solution is obtained.
对系数是概周期函数的传染病s IS模型进行了研究，得到了概周期解存在惟一的一个充分条件。
An epidemic SIS model whose coefficient is almost periodic functions is studied. A sufficient condition of existence and uniqueness of positive periodic solution is obtained.
对系数是概周期函数的传染病s IS模型进行了研究，得到了概周期解存在惟一的一个充分条件。
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