V2EX fugacity

Fugacity

释义 Definition

fugacity(名词):易挥发性;易逃逸/易散失的性质。常用于化学与热力学语境,指物质(尤其是气体)从体系中“逃逸”的倾向;在更一般的语境中,也可指“短暂、易逝”的特性。(另有更专业的热力学含义:与逸度相关的“逃逸趋势”的量化概念。)

发音 Pronunciation

/justi/

例句 Examples

Fugacity is higher at higher temperatures.
温度越高,物质的易挥发性通常越强。

In thermodynamics, fugacity helps describe how a real gas deviates from ideal behavior under pressure.
在热力学中,逸度(fugacity)有助于描述真实气体在压力下相对理想行为的偏离。

词源 Etymology

来自拉丁语词根 **fug-**(意为“逃跑、逃离”,如 fugitive “逃亡者”),加上名词后缀 -ity(表示性质、状态)。整体含义可理解为“容易逃逸/散失的性质”,因此特别适合用来描述气体分子“逃逸”的倾向。

相关词 Related Words

文学作品 Literary Works

  • The Feynman Lectures on Physics(费曼《物理学讲义》)在统计物理/热力学相关讨论中涉及真实气体与偏离理想模型的概念语境。
  • Physical Chemistry(如 Atkins 的《Physical Chemistry/物理化学》教材)在化学势、逸度与相平衡章节中常出现该词。
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