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activité; activité nucléaire; taux de désintégration |
активност: 28 phrases in 10 subjects |
Chemistry | 2 |
Construction | 7 |
Economy | 3 |
Environment | 1 |
Health care | 3 |
Medical | 2 |
Microsoft | 4 |
Pharmacy and pharmacology | 1 |
Physical sciences | 2 |
Social science | 3 |