radius

英 [ˈreɪdiəs]

美 [ˈreɪdiəs]

n. 半径(长度); 半径范围; 周围; 桡骨

复数：radii　

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

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。

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)

There's a zero point and maxima in the relationship curve of beam-waist radius and measurement error.
光腰半径与测量误差的关系曲线出现一零值点和一极大值点。
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。
We give a proof of some upper bounds for the spectral radius of graphs.
该文给出了图的谱半径的一个可达上界的证明。
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 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。
Here is atomic radius versus atomic number.
这是原子半径和原子序数。
A sample of the detailed information that RADIUS will provide and manage.
RADIUS将提供和管理的详细信息的一个示例。
A circle has diameter, radius and circumference.
圆有直径，半径和圆周。
The cutting edge's radius of curvature can be estimated.
断面曲率半径是可被预估的。
And, let's see, we've talked about radius, we've talked about energy.
我看看，我们已经讲了半径了，讲了能量了。