rad.
英
美
- [医]根
详细释义
名词 rad:
-
a unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated material
-
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)
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