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| radioactive half-life; decay half-life; half-life time; half-life value | |||
| half-life The time required for one-half the atoms of a given amount of radioactive material to undergo radioactive decay | |||
| half-life; half-life period | |||
| puoliintumisaika: 6 phrases in 5 subjects |
| Environment | 1 |
| Health care | 1 |
| Life sciences | 1 |
| Medical | 2 |
| Nuclear physics | 1 |