money-in-the-utility function model 货币内在效用模型
A national utility function model gives a comprehensive analysis on the rationality of state holding.
国家效用函数模型综合分析了国家控股的合理性。
The utility function model of friendship index expounds the prerequisite and degree of altruistic, egoistic, harm and ride-free behavior that they conform to economic law.
行为的敌友指数效用函数模型，在个体水平上说明了利他、利己、损人和搭便车行为发生的条件和程度，指出它们都是符合经济学规律的。
The mathematical model based on orthogonal function as fan characteristic curve fitting is introduced and its precision and utility is validated through the calculating example.
介绍了采用正交函数法快速拟合通风机性能曲线的数学模型，通过算例验证了此数学模型的精确性和实用性。
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