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)

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, 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。
This research has certain reference value for the prediction and of spherical charge on blasting cavity radius in soil.
本文的研究对土中爆炸空腔半径预测有一定的参考价值。
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 argument to sphere represents the radius of the sphere.
sphere的参数表示了球体的半径。
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。
No, but it will give me a search radius.
不，但是这会给我个调查的范围。
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。
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。
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。