And this paper discusses the deathrate function that plays an important role in the model and a numerical method is provided to solve the model. 同时文中还讨论了在模型中占有重要地位的死亡率函数,并提出了数值方法求解模型。
An Infectious Disease Model for Birthrate and Deathrate 考虑出生与死亡因素的传染病模型