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sir
- SIR(Susceptibles,Infectives,Recovered)模型来研究如天花,流感,肝炎,麻疹等治愈后均有很强的免疫力的传染病-SIR (Susceptibles, Infectives, Recovered) model to study such as smallpox, influenza, hepatitis, measles, etc. have a strong immunity after cure of infectious diseases