We then get the life annuity actuarial present value models of annuity portfolio insurance through the portfolio theory, under the independent stochastic interest rates environment.

• 然后，考虑市场上存在多种相互独立的随机投资利率的情况下，依据投资组合理论得出企业年金保险中多种生存年金组合的精算现值模型。