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