短語詞組短語utility expectation value 傚用期望值utility expectation value decision 傚用期望值決策Weighted Utility Value 加權(quán)傚用值Utility value of service 服務(wù)傚用價值理論has greatly utility value 很有應(yīng)用價值fuzzy utility value 模糊傚用值utility value of water 水的傚用價值very strong utility value 較強(qiáng)的實(shí)用價值extrinsic utility value 外在實(shí)用價值 返回 utility value