V2EX lower-limit

Lower Limit

定义 Definition

lower limit下限;最低限度。指某个范围、数量、标准或允许值中不能再低的界线(常见于数学、统计、工程、法律/政策与日常表达)。也可在特定语境中指“(积分的)下限”等更专门含义。

发音 Pronunciation (IPA)

/lo lmt/

例句 Examples

The lower limit for this job is 18 years old.
这份工作的年龄下限是18岁。

To avoid damaging the battery, the system shuts down when the voltage drops below the lower limit set by the manufacturer.
为避免损坏电池,当电压低于制造商设定的下限时,系统会自动关机。

词源 Etymology

lower 来自古英语 lāwra(更低的),表示“较低的”;limit 来自拉丁语 limes/limitis(边界、界限)。合在一起字面就是“较低的界限”,引申为“最低允许值/下界”。

相关词 Related Words

文学与著作中的用例 Literary Works

  • Calculus: Early Transcendentals(James Stewart)在定积分与极限相关章节中常见 “lower limit (of integration)” 的用法。
  • The Feynman Lectures on Physics(Richard P. Feynman 等)在讨论物理量的取值范围、近似与边界条件时常出现 “lower limit”。
  • An Introduction to the Theory of Numbers(G. H. Hardy & E. M. Wright)在不等式、估计与“上下界”讨论中会使用 “lower limit / lower bound” 等表达。
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