radius

英 [ˈreɪdiəs]

美 [ˈreɪdiəs]

n.  半径(长度); 半径范围; 周围; 桡骨

复数：radii　

CET4CET6考研TOEFLIELTSGRETEM4TEM8电力

Collins.1 / BNC.7090 / COCA.9413

牛津词典

noun

• 半径（长度）
  a straight line between the centre of a circle and any point on its outer edge; the length of this line
• 半径范围；周围
  a round area that covers the distance mentioned from a central point
  1. They deliver to within a 5-mile radius of the store.
     他们在距离商场5英里的范围内送货上门。
• 桡骨
  the shorter bone of the two bones in the lower part of the arm between the elbow and the wrist, on the same side as the thumb

柯林斯词典

• N-SING 半径范围；半径距离
  Theradiusaround a particular point is the distance from it in any direction.
  1. Nigel has searched for work in a ten-mile radius around his home.
     奈杰尔一直在他家周围10英里的范围内找工作。
• N-COUNT 半径
  Theradiusof a circle is the distance from its centre to its outside edge.
  1. He indicated a semicircle with a radius of about thirty miles.
     他标示出了一个半径大约为30英里的半圆形。

英英释义

noun

• support consisting of a radial member of a wheel joining the hub to the rim
  Synonym:spokewheel spoke
• the length of a line segment between the center and circumference of a circle or sphere
  Synonym:r
• the outer and slightly shorter of the two bones of the human forearm
• a circular region whose area is indicated by the length of its radius
  1. they located it within a radius of 2 miles
• a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)

双语例句

• Teacher: What's the relationship between the radius and the diameter of the same circle?
  师：直径的长度和半径有什么关系？
• He indicated a semicircle with a radius of about thirty miles.
  他标示出了一个半径大约为30英里的半圆形。
• Here is atomic radius versus atomic number.
  这是原子半径和原子序数。
• The necessary exposure time for corona at different solar radius is estimated as well.
  文章还估计了拍摄不同太阳半径上日冕所需的曝光时间。
• The argument to sphere represents the radius of the sphere.
  sphere的参数表示了球体的半径。
• Through the simulation to choose the optimum truncation radius and the optimal time step.
  经过模仿选择最优的截断半径和最优的时间步长。
• It is found that the flanging height is increasing with the increase of thickness and the corner radius.
  发现随着厚度和弯曲圆角半径的增加，翻边高度增大。
• The radius variation of the jet in the motion process is deduced based on the virtual origin concept.
  基于虚拟原点概念推导了运动过程中射流径向尺寸变化规律。
• A circle has diameter, radius and circumference.
  圆有直径，半径和圆周。
• This is the kinetic energy for something in orbit at this radius, and this is the potential energy.
  这是在轨道内这个，半径的物体的动能，这是势能。