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| radioactive substance Any substance that contains one or more radionuclides of which the activity or the concentration cannot be disregarded as far as radiation protection is concerned | |||
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sustancias radiactivas : 15 צירופים, 4 נושאים |
| חוֹק | 2 |
| מכשירי חשמל | 4 |
| סביבה | 5 |
| פיזיקה גרעינית | 4 |