Collective Risk model is very important in actuary, and it is easy to handle in math-matics.

短期聚合风险模型在精算学上占有非常重要的地位，而且在数学上处理起来也比较容易。

youdao

Collective Risk model is very important in actuary, and it is easy to handle in math-matics.

短期聚合风险模型在精算学上占有非常重要的地位，而且在数学上处理起来也比较容易。

youdao