V2EX frequency factor

Frequency Factor

释义 Definition

“Frequency factor”常译为频率因子/频数因子,指一个用来表征或修正“频率相关影响”的系数;在不同学科中含义略有差异。常见用法包括:

  • 统计/水文学(频率分析):用于把标准差等量转化为设计值的系数(如极值分布/重现期计算中的系数)。
  • 工程/物理/化学:表示与频率有关的比例因子或参数(在不同模型里定义不同)。

发音 Pronunciation (IPA)

/frikwnsi fktr/

词源 Etymology

“Frequency”源自拉丁语 frequentia(“频繁、次数多”),表示“出现的次数/频率”;“factor”源自拉丁语 factor(“做事者、促成者”),在数学与工程语境中常指“因子、系数”。合起来“frequency factor”即“与频率相关、起到调节或换算作用的系数”。

例句 Examples

The frequency factor is used to estimate the design flood.
频率因子用于估算设计洪水。

In extreme-value analysis, engineers apply a frequency factor to convert the mean and standard deviation into a value corresponding to a chosen return period.
在极值分析中,工程师会使用频率因子把均值和标准差换算为对应某一重现期的数值。

相关词 Related Words

文学与著作 Literary Works

  • Applied Hydrology(Chow, Maidment & Mays)在洪水频率分析与设计值估算相关章节常见该术语。
  • Hydrology and Floodplain Analysis(Bedient, Huber & Vieux)用于重现期、极值分布与设计洪水计算的讨论中。
  • Statistical Methods in Hydrology(Kite)统计水文学的频率分析中常用“frequency factor”等表述。
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