rad

美音音标: [ræd] rad
英音音标: [ræd] result.0.expl|add:"

解释
弧度单位;

同义
rad
词性
n
解释
a unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated material
示例
None

同义
rad radian
词性
n
解释
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)
示例
None