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| decay half-life; half-life time; half-life value | |||
| half change value | |||
| half-life period; radioactive half-life | |||
| effective life | |||
| half-life | |||
| half-life The time required for one-half the atoms of a given amount of radioactive material to undergo radioactive decay | |||
| time to half value | |||
| elimination half-life; metabolic half-life; metabolic half-time | |||
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| radioactive half-life | |||
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halveringstid : 16 短语, 8 学科 |
| 一般 | 3 |
| 化学 | 3 |
| 医疗的 | 1 |
| 卫生保健 | 3 |
| 地球科学 | 2 |
| 技术 | 2 |
| 核物理 | 1 |
| 核能和聚变能 | 1 |