首页英语词典radianradian英英释意

radian

英['reɪdɪən] 美['redɪən]
  • n. [数] 弧度
  • n. (Radian)人名;(罗)拉迪安

英英释意


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