| 单词 | rad |
| 释义 | Word Frequency rad 1(ræd) noun a former unit of absorbed ionizing radiation dose equivalent to an energy absorption per unit mass of 0.01 joule per kilogram of irradiated material. 1 rad is equivalent to 0.01 gray Word origin C20: shortened from radiationWord Frequency rad 2symbol for radian Word Frequency rad.abbreviation for 1. radical 2. radius |
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