| 1. | Statistic model of biological population growth
生物种群的一类统计模型 |
| 2. | The existence and uniqueness of global solutions in a functional differential equation model of biological population
一个有关生物种群的泛函微分方程模型整体解的存在性和唯一性 |
| 3. | So " any attempt to establish lines of division among biological populations ( is ) both arbitrary and subjective , " the association said
因此这个学会说：任何企图建立分隔生物族群界线的企图是武断跟主观的。 |
| 4. | The prohlc - m of persistence of the biological population is very important with regard to biomath - ematics and other related courses
对于生物数学和其它相关学科而言，种群的持续生存一直是学者们倍受关注的有趣问题。 |
| 5. | The usage of reaction diffusion equations in the dynamics of biological populations mainly reflects that the ecological equations have a diffusion term
反应扩散方程运用到生物群体动力学中主要体现在生态方程有了扩散项。 |
| 6. | In ecological systems , biological populations spontaneously migrant or diffuse from locations of high concentration to locations of low concentration by their own diffused rates di for the sake of effects of space , foods and other competitive factors
在生态系统中，由于生存空间、食物等竞争因素的影响，生物群体自然地按各自的扩散率d _ i从密度高的地方向密度低的地方转移、扩散。 |
| 7. | Therefore , we need more concrete function to better discribe the variation of some biological populations in our real world . the two important indexes r ( t ) and k ( t ) of logistic equation are asmptotic periodic function , and discussed by author . the asmptotic solution of the asmptotic periodic logistic function is obtained
因而，为了更好地刻划客观世界，我们需要用更加符合客观实际的函数来描述生物种群的变化，于是作者对logistic方程的两个重要的参数r ( t ) ， k ( t )分别是渐近周期函数时，研究渐近周期logistic方程的渐近周期解，并且得到了解的存在性，唯一性，全局吸引性等一些良好的性质 |
