radius
英['re?d??s]
美['red??s]
- n. 半徑，半徑范圍；[解剖] 橈骨；輻射光線；有效航程
- n. (Radius)人名；(意、印尼)拉迪烏斯；(英)雷迪厄斯；(法)拉迪于斯
英英釋意
- 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