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中文摘要：
本文构建了低温流体^3He状态方程的总体研究框架，它以温度和密度为独立变量，采用Helmholtz能形式表述^3He的热力性质依赖关系。在此基础上，推导了基于Helmholtz能形式基本状态方程的各热力学性质表达式。
英文摘要：
A framework of the state equation for cryogenic fluid ^3He is constructed. Temperature and density are treated as the independent input variables and helmholtz energy as the dependent variable. All other thermodynamic property expressions are derived from helmholtz energy with respect to temperature or density or both of them. The form of the state equation and the derived property expressions together show the thermodynamic consistency, feasibility and advantages of the framework.
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