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| beamed radiation | |||
| directed radiation; direction radiation | |||
| directional radiation | |||
| 定向 辐射: 10 phrases in 6 subjects |
| Aviation | 1 |
| Electronics | 3 |
| Metallurgy | 2 |
| Space | 2 |
| Technology | 1 |
| Telecommunications | 1 |
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