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radian是什么意思

2024-02-03 19:16:17
radian
美[reɪdiən]  英[reɪdiən]
n.  弧度
  近义词:rad,

英英释义

Noun
  1. the unit of plane angle adopted under the Systeme International dUnites; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees)

例句

用作名词(n.)
  1. A unit of angular distance equals to one thousandth of a radian.一种角距离单位相当于弧度的千分之一。