V2EX absolute pressure

Absolute Pressure

Definition / 释义

绝对压力:以绝对真空为零点基准测得的压力值。常用关系:绝对压力 = 表压(Gauge)+ 大气压(Atmospheric)
(在工程与热力学中最常用;另有“绝对的压力/巨大压力”的日常引申用法,但本词组通常指物理量。)

Pronunciation (IPA) / 发音(IPA)

/bslut prr/

Examples / 例句

The sensor measures absolute pressure in the tank.
传感器测量储罐内的绝对压力。

Because the system operates near vacuum, using gauge pressure would be misleading, so we report absolute pressure for all readings.
由于系统在接近真空的条件下运行,使用表压会产生误导,因此我们对所有读数都报告绝对压力。

Etymology / 词源

absolute 源自拉丁语 absolutus,意为“解除束缚的、完整的”,引申为“独立于其他参照、无条件的”;pressure 源自拉丁语 pressura(“压、挤压”),与 premere(“压”)相关。合在一起,absolute pressure 指“以绝对基准(真空)为参照的压力”

Related Words / 相关词

Notable Works / 文献与著作中的用例

  • Perry’s Chemical Engineers’ Handbook(《佩里化工工程师手册》)
  • Fundamentals of Thermodynamics(Moran & Shapiro,《热力学基础》)
  • Fluid Mechanics(Frank M. White,《流体力学》)
  • Marks’ Standard Handbook for Mechanical Engineers(《马克斯机械工程师标准手册》)
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