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

单词	steradian
释义	ste·ra·di·an (stĭ-rādē-ən) n. Abbr. sr A unit of measure equal to the solid angle subtended at the center of a sphere by an area on the surface of the sphere that is equal to the radius squared. The total solid angle of a sphere is 4π steradians. [STE(REO)- + RADIAN.] steradian If A = r2 then solid angle Ω = 1 sr.
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