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| período de vida media; tiempo de mitad | |||
| período de semidesintegración | |||
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| vida media | |||
| periodo de vida media | |||
| período radiactivo; semivida radiactiva | |||
| media de vida | |||
| periodo de semidesintegración | |||
| hemivida f; semivida f; vida mitad | |||
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| media de vida | |||
| 英语 词库 | |||
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| T 1/2 | |||
| The time required for the activity of a given radioactive species to decrease to half of its initial value due to radioactive decay (JP 3-11) | |||
| The time span necessary for the atoms of a nuclide to disintegrate by one half | |||
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| The time it takes a drug to lose half its original concentration or activity after being introduced into the body. Drug half-life is considered when determining drug dosing. | |||
| half life: 42 短语, 12 学科 |
| 一般 | 2 |
| 农业 | 1 |
| 化学 | 3 |
| 医疗的 | 5 |
| 卫生保健 | 5 |
| 技术 | 5 |
| 放射学 | 3 |
| 核物理 | 4 |
| 核能和聚变能 | 3 |
| 联合国 | 1 |
| 自然科学 | 2 |
| 药店 | 8 |