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Rad    音标拼音: [r'æd]
弧度单位

弧度单位

rad
n 1: a unit of absorbed ionizing radiation equal to 100 ergs per
gram of irradiated material
2: 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) [synonym: {radian}, {rad}]

Rad \Rad\ (r[a^]d), n. [radiation absorbed dose.]
A unit of measurement of the amount of ionizing radiation
absorbed by an object, equal to an energy of 100 ergs per
gram of irradiated material (equal to 0.01 gray).
[PJC]


Rad \Rad\ (r[a^]d), obs.
imp. & p. p. of {Read}, {Rede}. --Spenser.
[1913 Webster]

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