radian

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英 [ˈreɪdiən]
美 [ˈrediən]
是什么意思
  • n.

    弧度;弪;

  • 英英释义

    radian[ 'reidiən ]

    • n.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)

      同义词:rad

    学习怎么用

    双语例句

    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。

    权威例句

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