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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 in 11 subjects |
| Chemistry | 1 |
| Coal | 1 |
| Earth sciences | 1 |
| Environment | 2 |
| Geology | 1 |
| Industry | 1 |
| Information technology | 1 |
| Medical | 1 |
| Natural resourses and wildlife conservation | 7 |
| Road works | 1 |
| Textile industry | 2 |