V2EX cross section

Cross Section

释义 Definition

横截面;剖面:把物体/结构沿与其长度方向相交(常为垂直)的平面“切开”后得到的截面形状或图示;也可指对某一群体在某一时点的“横断面”(统计学/社会科学语境)。

发音 Pronunciation

/krs skn/(美式常见亦作 /krs skn/)

例句 Examples

The diagram shows a cross section of the tree trunk.
这张图展示了树干的横截面。

Engineers analyzed the cross section of the bridge cable to estimate its load-bearing capacity under extreme weather.
工程师分析了桥梁缆索的剖面,以估算其在极端天气下的承载能力。

词源 Etymology

cross(“横穿的、交叉的”)+ section(“切开的一段/截面”)组成,字面意思是“横向的切面”。在解剖学、工程制图、地质学中常用于表示“剖开后看到的内部结构”;在统计学中引申为“某一时点的样本切片”(cross-sectional)。

相关词 Related Words

文学与著作 Literary Works

  • Gray’s Anatomy(《格雷氏解剖学》):大量使用 cross section 描述人体结构的横断面/剖面图。
  • Campbell Biology(《坎贝尔生物学》):常用 cross section 标注植物茎、叶、器官等的横切面图示。
  • Introduction to the Mechanics of a Continuous Medium(连续介质力学入门类教材/专著中常见):用于讨论材料/构件的截面性质(如面积、应力分布)。
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