终值为一元的年金

[经] annuity that will amount to 1

zhōng zhí wèi yī yuán de nián jīn ㄓㄨㄥ ㄓˊ ㄨㄟˋ ㄧ ㄩㄢˊ ㄉㄜ˙ ㄋㄧㄢˊ ㄐㄧㄣ