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射线 屏 : 32 phrases in 11 subjects |
| Aviation | 1 |
| Chemistry | 1 |
| Electronics | 2 |
| General | 4 |
| Geology | 1 |
| Metallurgy | 10 |
| Oil / petroleum | 2 |
| Physics | 1 |
| Radio | 1 |
| Space | 3 |
| Technology | 6 |
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