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)

Here is atomic radius versus atomic number.
这是原子半径和原子序数。
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。
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。
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。
And, there's a radius that's been painted blue in it.
半径被涂上了蓝色。
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。
We can compute the circular area with radius.
我们能用半径计算出圆的面积。
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。
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。
Research shows that multi-point sandwich forming is suitable to form the workpieces with large radius of the curvature.
研究表明，多点“三明治”成形适于制造大曲率半径曲面工件。