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| background emission | |||
| 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 | |||
| ambient radiation; background radiation | |||
| bakgrundsstrålning: 4 phrases in 3 subjects |
| Electronics | 2 |
| Life sciences | 1 |
| Medical | 1 |