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| background radiation; background radiation Radiation resulting from natural sources, as opposed to man-made sources, and to which people are exposed in everyday, normal life; for example from rocks and soil | |||
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| Hintergrundstrahlung: 6 phrases in 5 subjects |
| Environment | 1 |
| General | 1 |
| High energy physics | 2 |
| Life sciences | 1 |
| Physics | 1 |