radius [名詞] 半徑
radius
['reidiəs]
n.半徑範圍, 半徑, 橈骨, 輻射區
例句與用法：
The radius of a circle described by a crank, cam, or similar machine part.
(曲軸的)半徑曲柄、凸輪或類似機器部件形成的圓的半徑
We can compute the circular area with radius.
我們能用半徑計算出圓的面積。
The police searched all the woods within a six-mile radius.
警察搜索了在周圍六英里以內的樹林各處。
詞形變化：
名詞複數: radii |
英文解釋:
名詞 radius:
the length of a line segment between the center and circumference of a circle or sphere
同義詞：r
a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)
a circular region whose area is indicated by the length of its radius
the outer and slightly shorter of the two bones of the human forearm
support consisting of a radial member of a wheel joining the hub to the rim
同義詞：spoke, wheel spoke
以上來源於大辭典
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