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radii    
n.
pl. 半径

半径

Radii \Ra"di*i\ (r[=a]"d[i^]*[imac]), n.,
pl. of {Radius}.
[1913 Webster]


Radius \Ra"di*us\ (r[=a]"d[i^]*[u^]s), n.; pl. L. {Radii}
(r[=a]"d[i^]*[imac]); E. {Radiuses}
(r[=a]"d[i^]*[u^]s*[e^]z). [L., a staff, rod, spoke of a
wheel, radius, ray. See {Ray} a divergent line.]
1. (Geom.) A right line drawn or extending from the center of
a circle to the periphery; the semidiameter of a circle or
sphere.
[1913 Webster]

2. (Anat.) The preaxial bone of the forearm, or brachium,
corresponding to the tibia of the hind limb. See Illust.
of {Artiodactyla}.
[1913 Webster]

Note: The radius is on the same side of the limb as the
thumb, or pollex, and in man it is so articulated that
its lower end is capable of partial rotation about the
ulna.
[1913 Webster]

3. (Bot.) A ray, or outer floret, of the capitulum of such
plants as the sunflower and the daisy. See {Ray}, 2.
[1913 Webster]

4. pl. (Zool.)
(a) The barbs of a perfect feather.
(b) Radiating organs, or color-markings, of the radiates.
[1913 Webster]

5. The movable limb of a sextant or other angular instrument.
--Knight.
[1913 Webster]

{Radius bar} (Mach.), a bar pivoted at one end, about which
it swings, and having its other end attached to a piece
which it causes to move in a circular arc.

{Radius of curvature}. See under {Curvature}.
[1913 Webster]


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  • RADII - Transcend boundaries
    RADII (rā'dē-ī’) is an independent media platform dedicated to bridging the East and West by shining a light on topics and issues that connect a new generation of changemakers
  • radii和radius的区别_百度知道
    radii和radius的主要区别在于它们的形态和用途。 单词形态: 1 radius:这是一个单数形式的名词,指的是一个单一的半径。 例如,当我们谈论一个圆的半径或某物体的放射状的线时,会使用这个词。 2 radii:这是radius的复数形式。
  • radii是什么意思_radii的翻译_音标_读音_用法_例句_爱词霸在线词典
    Use to estimate turning radii for a typical small tractor with single semitrailer 用于估计带有单节半挂车的典型小型牵引车的转弯半径 期刊摘选
  • RADII Definition Meaning - Merriam-Webster
    “Radii ” Merriam-Webster com Dictionary, Merriam-Webster, https: www merriam-webster com dictionary radii Accessed 4 Apr 2026
  • RADII中文 (简体)翻译:剑桥词典
    We aim at choosing the only independent constant, which is 0, such that the insertion radii are bounded from below by a positive constant
  • radii - 搜索 词典
    4 When the skeleton of a character is given, these radii on joints are obtained according to length of bones in Anthropometry 给定 人物角色 骨架 后, 依据 人体 测量学 根据 骨骼 长度 计算 出 关 节点处 的 半径。
  • Radius vs. Radii: Whats the Difference?
    "Radius" is the distance from the center of a circle to its edge, while "Radii" is the plural form of "Radius," indicating multiple such distances
  • RADII 释义 | 柯林斯英语词典 - Collins Online Dictionary
    Radii is the plural of radius What are the radii of the circles? Collins COBUILD Advanced Learner’s Dictionary Copyright © HarperCollins Publishers
  • RADII Definition Meaning | Dictionary. com
    She turned back around, which took a moment because ponies do not have quick turning radii From "Chronicles of a Lizard Nobody" by Patrick Ness Definitions and idiom definitions from Dictionary com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc 2023
  • Radii - definition of radii by The Free Dictionary
    Define radii radii synonyms, radii pronunciation, radii translation, English dictionary definition of radii n A plural of radius American Heritage® Dictionary of the English Language, Fifth Edition Copyright © 2016 by Houghton Mifflin Harcourt Publishing





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