SCIENCE|natural and applied sciences|earth sciences · INDUSTRY|chemistry|chemical element
- rianghás Tagairt Faomhadh an téarma seo mar chuid de Thionscadal Lex
- ga
- trace gas
- en
- Sainmhíniú gas that is only found in very small amounts Tagairt "COM-EN based on: Chambers Dictionary definition of ""trace element"" http://www.chambers.co.uk/search.php?query=trace+gas&title=21st [21.7.2014]"