短語詞組短語Utility Function Theory 效用函數(shù)理論marginal utility value theory 邊際效用價值論Utility maximization theory 效用最大化理論expected utility decision theory 預(yù)期的效用性理論utility price theory 效用價格理論utility choice theory 效用選擇理論utility difference theory 效用差異理論utility value theory 主觀價值說 返回 utility theory