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→SIRD模型
这里<math>\beta, \gamma, \mu</math>分别是感染率，康复率和死亡率。<ref>The first and second differential equations are transformed and brought to the same form as for the ''SIR model'' above.</ref>
这里<math>\beta, \gamma, \mu</math>分别是感染率，康复率和死亡率。<ref>The first and second differential equations are transformed and brought to the same form as for the ''SIR model'' above.</ref>
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