效用理论效用论theory: n. 1.理论,学理,原理。 2.学说,论说 (opp. ...utility: n. 1.有用,有益;实用,【经济学】效用;功利;〔常 ...utility theory: 效用理论utility theory and decision theory: 效用理论和决策理论expected utility theory: 预期实用理论下载手机词典可随时随地查词查翻译