V2EX supersaturation

Supersaturation

释义 Definition

过饱和(状态):指溶液或气体在一定条件下所含溶质/气体的量超过正常“饱和”所能稳定容纳的限度,但由于缺少晶核、扰动较小等原因,仍暂时保持不析出/不分离的状态。常见于化学结晶、气泡形成、相变等情境。(也可用于生理/医学语境,如血液氧“过饱和”。)

发音 Pronunciation

/suprstren/

例句 Examples

A supersaturated solution can crystallize suddenly.
过饱和溶液可能会突然结晶。

When the temperature dropped, the supersaturation led to rapid crystal growth, changing the solution from clear to cloudy within seconds.
当温度下降时,过饱和引发晶体快速生长,使溶液在几秒内从澄清变为浑浊。

词源 Etymology

由 **super-**(“超过、在……之上”)+ saturation(“饱和”)构成;其中 saturation 源自拉丁语 saturare,意为“使充满、使饱足”。整体字面意思就是“超过饱和”。

相关词 Related Words

文学与著作 Literary Works

  • Oliver Sacks Uncle Tungsten: Memories of a Chemical Boyhood(《钨舅舅:一个化学少年的回忆》):涉及溶液与结晶等化学现象,常出现“过饱和/过饱和溶液”相关表述。
  • Sam Kean The Disappearing Spoon(《消失的汤匙》):以通俗方式讲述化学故事,讨论结晶与溶液行为时会用到“supersaturation”。
  • Primo Levi The Periodic Table(《元素周期表》):以化学为隐喻与叙事背景的作品,涉及溶液、结晶等语境中可见相关术语(含“supersaturation/过饱和”)。
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