radii
美['reɪdiaɪ] 英['reɪdiaɪ]
n. 半径
sp. 名词radius的复数形式.
例句
用作名词(n.)- A plane figure bounded by two radii and the included arc of a circle.由两个半径和两个半径中间的弧所形成的一个平面形状。
- It is now necessary to introduce a sign convention for radii of curvature.现在必须介绍曲率半径的正负号规则。
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