n.凈費(fèi)用收益 ratio of discounted net benefit to cost: 凈收益貼現(xiàn)值對(duì)成本比率net benefit: 凈利益; 凈效益cost benefit: 成本收益; 成本效益cost-benefit: 成本效益的; 效益分析net cost: 凈成本；成本凈額；費(fèi)用凈額; 凈價(jià)下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯
