V2EX equation of state

Equation of State

定义 Definition

equation of state 指“状态方程”:用数学关系把物质的状态量(如压强 P、体积 V、温度 T、密度等)联系起来的方程,用于描述系统在平衡状态下的性质(常见于热力学与流体力学)。常见例子包括理想气体状态方程 \(PV=nRT\)。

发音 Pronunciation (IPA)

/kwen v stet/

例句 Examples

The ideal gas law is an equation of state.
理想气体定律是一种状态方程。

To model the atmosphere accurately, scientists choose an equation of state that accounts for humidity and real-gas effects.
为了更准确地建立大气模型,科学家会选择能考虑湿度与真实气体效应的状态方程。

词源 Etymology

equation 来自拉丁语 aequare(“使相等、使平衡”),引申为“等式、方程”;state 来自拉丁语 status(“状态、情形”)。合起来 equation of state 字面意思就是“描述状态的方程”,在科学语境中特指把状态量联系起来的数学关系。

相关词 Related Words

文学与经典著作 Literary Works

  • Thermodynamics: An Engineering Approach(Yunus A. engel, Michael A. Boles)在工程热力学中系统讲解多种状态方程及其应用。
  • An Introduction to Thermal Physics(Daniel V. Schroeder)在热物理入门中讨论理想气体与更一般的状态方程。
  • Statistical Physics(Landau & Lifshitz)从统计物理角度推导与讨论物质的宏观状态关系(含状态方程思想)。
  • Fundamentals of Statistical and Thermal Physics(Frederick Reif)用统计方法连接微观模型与宏观状态方程。
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