radius是什么意思

radius

美['reɪdiəs]  英['reɪdiəs]
n.  半径范围；半径；桡骨；辐射区
  名词复数：radii
  近义词：circle，breadth，line，distance，length，area，range，ambit，extent，bounds，scope，areaofinfluence，umbrella，reach，sweep，remit，r，spoke，wheelspoke，

详细释义

n.(名词)
  1. 半径（范围、距离、长度）
  2. 周围
  3. 范围
  4. 辐射状部分，辐射物，辐条，辐
  5. 【解】桡骨
  6. 【动】径骨
  7. 【昆】径脉
  8. 【物】辐射线
  9. 【无线电】径向射线
  10. 针
  11. 【纺】杼
  12. 【植】射出花
  13. 雷迪厄斯，拉迪乌斯，拉迪于斯（音译名）
abbr.(缩略词)
  1. =Remote authentication Dial In User Service，远程认证拨号用户服务
v.(动词)
  1. 把...修圆磨光

双解释义

n.(名词)
  1. [C]半径(距离） (length of a) straight line from the centre of a circle or sphere to any point on its circumference or surface
  2. [C]用半径度量的圆形面积；半径范围 circular area measured by its radius

英英释义

Noun
  1. the length of a line segment between the center and circumference of a circle or sphere
  2. a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)
  3. a circular region whose area is indicated by the length of its radius;

    "they located it within a radius of 2 miles"

  4. the outer and slightly shorter of the two bones of the human forearm
  5. support consisting of a radial member of a wheel joining the hub to the rim

组词搭配

～+介词
  1. radiusof action活动半径；有效破坏半径
  2. the radiusof curvature曲率半径

例句

用作名词(n.)
  1. Nobody is allowed to enter the operation radius.不允许任何人进入工作半径范围以内。
  2. What is the radius of this circle?这个圆的半径有多长?
  3. We can compute the circular area with radius.我们能用半径计算出圆的面积。
  4. The radius expands markedly at its lower end.桡骨下端明显扩张。
  5. The police searched all the woods within a six-mile radius.警察搜索了在周围六英里以内的树林各处。
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