V2EX incompressibility

Incompressibility

释义 Definition

不可压缩性:指物质(尤其是流体或材料)在受压时体积几乎不发生变化的性质。在物理与工程中常用于“不可压缩流体/材料”的理想化假设。(也可泛指“难以被压缩的特性”。)

发音 Pronunciation (IPA)

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例句 Examples

Water is often treated as having incompressibility in basic calculations.
在基础计算中,水常被视为具有不可压缩性。

The model assumes incompressibility, which simplifies the equations but may fail at high speeds or pressures.
该模型假设不可压缩性,从而简化了方程,但在高速或高压条件下可能不适用。

词源 Etymology

in-(否定前缀,“不”)+ compress(压缩)+ -ible(“可……的”)+ -ity(名词后缀,表示性质)。字面意思是“不能被压缩的性质”,常见于流体力学、连续介质力学等语境。

相关词 Related Words

文学与著作中的用例 Literary / Notable Works

  • An Introduction to Fluid Dynamics(G. K. Batchelor):讨论不可压缩流动(incompressible flow)及相关假设。
  • Fluid Mechanics(L. D. Landau & E. M. Lifshitz):在连续介质与流体理论中使用“不可压缩性”作为核心概念之一。
  • The Feynman Lectures on Physics(Richard P. Feynman):在讲解流体与波动等内容时会提到不可压缩(incompressible)近似与其含义。
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