研究随机利率下离散时间保险风险模型。
This paper studies the discrete time risk model with stochastic rate.
对于离散时间系统最直接的方法是采用增广状态方法。
That is to say, it can only be calculated based on an augmented system.
模型在空间和时间上都是离散的，并可以模拟单个免疫细胞。
The model is discrete in time and space, and models each cell individually.
以三阶精度的三步法对时间离散。
Three step method with three order accuracy is used for time discretion.
它说的应该是采样时间必须离散。
时间就像离散的点。
时间就像离散的点。
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