V2EX safety margin

Safety Margin

释义 Definition

安全裕度/安全余量:为避免风险或失效而预留的“额外空间”,指系统在接近极限之前还能承受的余地。常见于工程设计(强度、载荷、温度等)与金融投资(价值与价格之间的余地,常称 margin of safety)。

发音 Pronunciation

/sefti mrdn/

例句 Examples

The bridge was built with a large safety margin.
这座桥的建造预留了很大的安全裕度。

To account for unexpected loads and material fatigue, the engineer increased the safety margin beyond the minimum required by the code.
为考虑意外载荷和材料疲劳,工程师把安全裕度提高到高于规范最低要求的水平。

词源 Etymology

Safety 来自拉丁语系词根,含“安全、免于危险”之意;margin 源自拉丁语 margo,本义是“边缘、边界”。合起来 safety margin 字面即“安全边界之外的余量”,引申为在计划或设计中刻意保留的缓冲区。

相关词 Related Words

文学与著作 Literary Works

  • Benjamin Graham, The Intelligent Investor(常以 “margin of safety” 讨论投资中的安全边际概念)
  • Benjamin Graham & David Dodd, Security Analysis(使用“margin of safety/安全边际”框架评估证券价值)
  • Machinery’s Handbook(工程手册类著作中常出现与安全裕度/安全系数相关的表述与计算)
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