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| 放射性材料 | |||
| 放射性物质 | |||
| radioactive material: 18 phrases in 11 subjects |
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| Aviation | 2 |
| Earth sciences | 1 |
| Ecology | 2 |
| Electronics | 1 |
| Environment | 1 |
| General | 1 |
| Nautical | 2 |
| Oil / petroleum | 1 |
| Technology | 4 |
| Water resources | 1 |
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