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natural radioactivity
earth.sc. natürliche Radioaktivität
environ. Natürliche Radioaktivität
R&D. natürlicher Strahlenpegel, natürliche Radioaktivität
радиоакт. natürliche Aktivität
natural radioactivity Radiation stemming mainly from uranium, present in small amounts in many rocks, soils, building material, etc.
environ. Natürliche Radioaktivität
natural radioactivity: 1 phrase in 1 subject
Electronics1

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