| 单词 | sievert |
| 释义 | sie·vert (sēvərt)n. Abbr. Sv The SI unit for the amount of ionizing radiation required to produce the same biological effect as one rad of high-penetration x-rays, equivalent to a gray for x-rays. [After Rolf Maximilian Sievert (1896-1966), Swedish radiologist.] |
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