英语词汇“radian”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	radian
释义	ra·di·an (rādē-ən) n. Abbr. rad A unit of angular measure equal to the angle subtended at the center of a circle by an arc equal in length to the radius of the circle, approximately 57°17′44.6". [RADI(US) + -AN¹.] radian When the length of an arc of a circle is equal to the radius of the circle, the angle subtended by that arc equals one radian.
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英语词典包含135693条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。