The understanding of equity possibility events probability model (the classical allusion exemplifies a type);
关于等可能事件概率模型（古典概型）的理解；
In this dissertation, we extends the classical risk model, and mainly discuss the ruin probability of two kinds of multiple-type risk model with dependent claims number process.
本文对经典风险模型进行了推广，研究了两类理赔到达计数过程相关的多险种风险模型的破产问题。
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