radius

英 [ˈreɪdiəs]

美 [ˈreɪdiəs]

n.  半径(长度); 半径范围; 周围; 桡骨

复数：radii　

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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

• 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。
• The branch cable has small bending radius, which reduces installation difficulty and demands small installation space.
  由于它的弯曲半径小，大大地降低了安装难度，和缩小了空间尺寸。
• 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？
• The quantum expressions of radius, energy level and flux are obtained.
  给出了半径、能级和磁通量等的量子表达式。
• End mill gashing and radius grinder having columns either at both ends or at both sides.
  端铣刀和侧面铣刀磨床在两端或者两侧有圆柱。
• Where are you humerus, radius, and ulna?
  肱骨、桡骨和尺骨在哪儿？
• 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。
• 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。
• And what I calculated was the terminal velocity as a function of radius of these ball bearings.
  我计算的是终端速度，作为这些钢珠的，半径函数。
• The influence of temperature, curvature radius of lens and the thickness of oil on ultrasonic field is analyzed.
  并分析了温度、透镜曲率半径和油层厚度对探头声场的影响。