diameter

B1 CET-4 大学 FREQ #15450 ★★☆☆☆

n. 直径 [医] 直经, 径

发音

UK /daɪˈæmɪtə(ɹ)/
US /daɪˈæmɪdɚ/
US /daɪˈæmədɚ/

词形变化

diameters 复数 diameters

别名

diam diam. diametre ⌀

教材释义与例句

名词

直径

释义与例句

n. B1
  1. 1.

    Any straight line between two points on the circumference of a circle that passes through the centre/center of the circle; a chord that passes through the center of the circle.

    数学
  2. 2.

    The length of such a line.

    直径

    数学
  3. 3.

    The maximum distance between any two points in a metric space.

    数学
  4. 4.

    The maximum eccentricity over all vertices in a graph.

    数学

词汇关系

名词

同义词 1

diam

上位词 2

length straight line

下位词 5

bore caliber gauge calibre windage

部分词 2

radius R

相关短语

major diameter minor diameter inside diameter [计] 内径 inner diameter [化] 内径 internal diameter [机] 内直径 tactical diameter

词源

From Old French diametre (French diamètre), from Latin diametros, from Ancient Greek διάμετρος (diámetros) (γραμμή (grammḗ)) (diametros grammē, “line measuring across”), from διά (diá, “across”) + μέτρον (métron, “measure”). By surface analysis, dia- + -meter.

来源：wiktionary