基本解释[經濟學]隨即貼現因子英汉例句雙語例句The actuarial formula of pure premium of the whole life insurance is discussed, as discount factor is random.在貼現因子爲隨機的條件下，給出終身壽險純保費的精算公式。random discount factor更多例句专业释义經濟學隨即貼現因子