land-based | activity
| activity | |
| nucl.phys. radiat. | matière radioactive |
| radiat. | radioactivité; matériau radioactif; activité; intensité de radioactivité |
| α activity | |
| nucl.phys. radiat. | activité alpha |
| radiat. | activité α |
| γ-activity | |
| nucl.phys. radiat. | activité gamma |
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| lb | |||
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land-based : 90 phrases in 15 subjects |