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天然放射性
| 本质
| 天然放射性 | |
| el. | natural activity; natural radioactivity |
| environ. | natural radioactivity |
| met. | natural radioactivity |
| 本质 | |
| gen. | essence |
| econ. | identity |
| hydroel.st. | principle |
| manag. | quick |
| met. | entity |
| |||
| natural radioactivity Radiation stemming mainly from uranium, present in small amounts in many rocks, soils, building material, etc. (辐射主要归因于铀，其少量出现在一些岩石、土壤，建筑材料等里面。) | |||
| natural radioactivity | |||
| natural activity | |||
| |||
| natural activity; natural radioactivity | |||
| 天然放射性: 26 phrases in 11 subjects |
| Chemistry | 1 |
| Earth sciences | 1 |
| Ecology | 1 |
| Electronics | 4 |
| Geology | 2 |
| Geophysics | 1 |
| Metallurgy | 1 |
| Nuclear physics | 2 |
| Sports | 2 |
| Technology | 10 |
| Wind Energy | 1 |
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