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| radioactive half-life | |||
| period (of decay) | |||
| half-life (period) | |||
| half life | |||
| radioactive halflife; half-value period; physical half-life (contrary to biological halflife, of a radionuclide or particle); decay period; disintegration period; radioactive half-period | |||
| half-life | |||
| half-life period | |||
| période radioactive: 15 phrases in 4 subjects |
| Chemistry | 2 |
| Earth sciences | 1 |
| Environment | 1 |
| Радиоактивное излучение | 11 |