diameter
名词 n.
英 /daɪˈæmɪtə(ɹ)/
美 /daɪˈæmɪdɚ/|/daɪˈæmədɚ/
英文释义
名词 n.
- Any straight line between two points on the circumference of a circle that passes through the center of the circle; a chord that passes through the center of the circle.
-
The length of such a line.
— In cases without good face contact, the diameter of the toolholder at the front of the flange or the tool itself should not be any larger than the gage diameter of the toolholder shank from a bending stiffness viewpoint.
- The maximum distance between any two points in a metric space.
- The maximum eccentricity over all vertices in a graph.
词汇关系
词源
Etymology tree
Proto-Indo-European *dwóh₁
Proto-Indo-European *dwísder.
Ancient Greek διά (diá)
Ancient Greek δῐᾰ- (dĭă-)
Proto-Indo-European *meh₁-
Proto-Indo-European *-tḗr
Proto-Indo-European *-trom
Proto-Hellenic *-tron
Ancient Greek -τρον (-tron)
Ancient Greek μέτρον (métron)
Ancient Greek διάμετρος (diámetros)bor.
Latin diametros
Old French diametre
English diameter
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.
Proto-Indo-European *dwóh₁
Proto-Indo-European *dwísder.
Ancient Greek διά (diá)
Ancient Greek δῐᾰ- (dĭă-)
Proto-Indo-European *meh₁-
Proto-Indo-European *-tḗr
Proto-Indo-European *-trom
Proto-Hellenic *-tron
Ancient Greek -τρον (-tron)
Ancient Greek μέτρον (métron)
Ancient Greek διάμετρος (diámetros)bor.
Latin diametros
Old French diametre
English diameter
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.
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数据来源: Wiktionary