V2EX yocto

Yocto

释义 Definition

**yocto-**:国际单位制(SI)中的前缀,表示 10(十的负二十四次方),用于表示极其微小的数量(如 yoctometer 10 米)。也常见于信息单位中(如 yoctobyte,理论上指 10 字节;实际使用较少)。

发音 Pronunciation (IPA)

/jkt/(英) ,/jkto/(美)

例句 Examples

A yoctometer is an incredibly small unit of length.
“幺可托米”是一个极其微小的长度单位。

Scientists sometimes talk about quantities as small as yocto- in particle physics.
科学家在粒子物理学中有时会谈到小到“幺可托-”级别的量,以便描述极端微小的尺度与效应。

词源 Etymology

yocto- 是为补足国际单位制小数前缀而在 20 世纪末引入的。它仿照 zepto- 等前缀的造词方式,并与更大的前缀 yotta-(10)在形式上相呼应;该类前缀多用于科学计量,便于在不写一长串零的情况下表达数量级。

相关词 Related Words

文学作品 Literary Works

“yocto-”主要出现在科学写作、科普读物与标准文档中,而非传统文学名著中;较常见的出处包括 BIPM(国际计量局)关于 SI 前缀的官方资料以及各类物理、化学教材与科普书中对单位前缀的说明。

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