请输入您要查询的英文单词:
单词
steradian
释义
steradian
/stəˈreidiən/
n.
the SI unit of solid angle, equal to the angle at the centre of a sphere subtended by a part of the surface equal in area to the square of the radius (abbr.
缩略
:
sr
)
立体弧度;球面
(
角
)
度
[Greek
stereos
‘solid’ + RADIAN]
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更新时间:2025/4/12 21:14:16