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| demi-vie m | |||
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| période radioactive | |||
| période f; période physique; demi-vie m (radioactive); demi-période radioactive; période atomique; période de radioactivité | |||
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| demi-période m | |||
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half- period : 23 phrases in 10 subjects |
| Agriculture | 7 |
| Chemistry | 1 |
| Earth sciences | 1 |
| General | 1 |
| Health care | 1 |
| Medical | 1 |
| Natural resourses and wildlife conservation | 1 |
| Nuclear physics | 1 |
| Technology | 3 |
| Радиоактивное излучение | 6 |
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