| 单词 | radioactive calcium |
| 释义 | radioactive calciumradioactive calciumAny of the radionuclides of calcium, the most common of which are the beta-emitting 45Ca, which has a half-life of 163 days, and the beta and gamma-emitting 47Ca, which has a half-life of 4.5 days and has some currency as a tracer for calcium metabolism studies. |
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