radius意思

1. 半径（范围、距离、长度）
2. 周围
3. 范围
4. 辐射状部分，辐射物，辐条，辐
5. 【解】桡骨
6. 【动】径骨
7. 【昆】径脉
8. 【物】辐射线
9. 【无线电】径向射线
10. 针
11. 【纺】杼
12. 【植】射出花
13. 雷迪厄斯，拉迪乌斯，拉迪于斯（音译名）

1. =Remote authentication Dial In User Service，远程认证拨号用户服务

1. 把...修圆磨光

1. the length of a line segment between the center and circumference of a circle or sphere
2. a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)
3. a circular region whose area is indicated by the length of its radius;

   "they located it within a radius of 2 miles"
   

4. the outer and slightly shorter of the two bones of the human forearm
5. support consisting of a radial member of a wheel joining the hub to the rim

1.半径范围；半径距离
Theradius around a particular point is the distance from it in any direction.

e.g. Nigel has searched for work in a ten-mileradius around his home.
奈杰尔一直在他家周围10英里的范围内找工作。

2.半径
Theradius of a circle is the distance from its centre to its outside edge.

e.g. He indicated a semicircle with aradius of about thirty miles.
他标示出了一个半径大约为30英里的半圆形。

1. We are measuring the radius of the circle.
   我们正在测量圆的半径。
2. He has visited every shop within a radius of two miles.
   周围两英里以内的店铺他都去过。

• The roads are to be watched within a radius of twenty miles.

  出自：H. Green

• The wreckage was scattered over a radius of a mile.

  出自：Times