生产要素支付 sinking fund payment factor: 偿债基金因子single-payment compound amount factor: 一次偿付复利因素single-payment compound-amount factor: 一次偿付复利因子single-payment present worth factor: 一次偿付现值因素single-payment present-worth factor: 一次偿付现值因子下载手机词典可随时随地查词查翻译