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)

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。
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。
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 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。
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？
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。
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。
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。
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。