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字典帮 >教育工具 >英语词汇“steradian”的英英意思、用法、释义、翻译、读音、例句、短语、词组、英语词典-本地帮

2025-07-19

“steradian”的英英意思

单词

steradian

释义

steradian Geom.|stəˈreɪdɪən|
[f. Gr. στερεός solid + radian n.]
A unit of measurement of solid angles (see quot. 1881).
1881Halsted Mensuration 78 A steradian is the angle subtended at the center by that part of every sphere equal to the square of the radius.1883W. Thomson in Encycl. Brit. XVI. 25/2 Number of Steradians in an Angle.1885A. Macfarlane Phys. Arith. 87 The unit-rate S per (L radius)² is sometimes called a steradian, that is, a solid radian.