V2EX exceedance

Exceedance

定义 Definition

exceedance(名词):(某一数值/阈值的)超出、超标、超越量;常用于统计、工程、水文与环境领域,指观测值或事件超过给定阈值的情况或次数。

发音 Pronunciation

/ksidns/

例句 Examples

The report shows an exceedance of the legal limit for nitrates in the river.
报告显示河流中的硝酸盐超过了法定限值。

When modeling floods, engineers estimate the annual exceedance probability for different water levels to assess risk.
在洪水建模中,工程师会估算不同水位的年度超越概率,以评估风险。

词源 Etymology

来自动词 exceed(超过)加名词后缀 -ance(表示“行为/状态/结果”)。因此 exceedance 字面意思就是“超过(某标准或阈值)的状态或结果”,在技术语境中逐渐固定为“超标/超越(阈值)事件或量”。

相关词 Related Words

文学作品 Literary Works

exceedance 更常见于科技写作与标准文件,在传统文学作品中相对少见;较常出现在以下类型与作者的非虚构作品中:

  • John von Neumann & Oskar Morgenstern(经济与风险相关论述中会涉及“超越概率/风险”表达)
  • Nassim Nicholas Taleb(关于极端事件与尾部风险的讨论中可能出现 exceedanceexceedance probability
  • 政府/机构报告与标准文档(如环境监测、水文频率分析、工程风险评估文本中频繁出现)
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