- downward enrichments
- геол.• вторично обогатяване
English-Bulgarian polytechnical dictionary . 2013.
downward enrichments
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Polar wind — is the permanent outflow of ionization from the polar regions of the magnetosphere. [http://amsglossary.allenpress.com/glossary/browse?s=p p=43 AMS Glossary] ] Ionospheric Plasma SourceThe ‘ground state’ of the ionosphere consists of the baseline … Wikipedia
