V2EX psi

Psi

定义 Definition

psi 常指“磅力每平方英寸”(pounds per square inch)的缩写,是衡量压力的单位,常用于轮胎气压、液压系统、工业设备等场景。(在其他语境中也可指希腊字母 Ψ/ψ,或心理学中的“心灵/精神”等含义。)

发音 Pronunciation (IPA)

/pi s a/

例句 Examples

The tire pressure is 32 psi.
轮胎气压是 32 psi(磅/平方英寸)。

The system must maintain a constant output pressure of 120 psi to operate safely under varying loads.
该系统必须将输出压力稳定在 120 psi,才能在不同负载下安全运行。

词源 Etymology

psi 作为压力单位的写法,来自英语短语 pounds per square inch 的首字母缩写(P-S-I)。由于在工程与日常使用中频繁出现,逐渐成为固定写法与常用单位标记。

相关词 Related Words

文学作品 Literary Works

psi 作为现代工程计量单位,更常见于技术手册、科普与工业写作中;在传统经典文学中出现相对少。较常见的“psi”文学用法反而来自 Ψ/ψ(希腊字母 psi) 或与心理学/科幻语境相关的写作。

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