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| micro element; micromineral; oligo-element; trace element; trace mineral | |||
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| micro elements; minor elements; trace elements | |||
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| trace element; trace elements; trace element Any of various chemical elements that occur in very small amounts in organisms and are essential for many physiological and biochemical processes | |||
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element-trace : 19 phrases, 11 sujets |
| Charbon | 1 |
| Chimie | 1 |
| Environnement | 2 |
| Géologie | 1 |
| Industrie | 1 |
| Industrie textile | 2 |
| Informatique | 1 |
| Médical | 1 |
| Ressources naturelles et conservation de la faune | 7 |
| Sciences de la Terre | 1 |
| Travaux routiers | 1 |