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| high-power valve | |||
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大功率 管 : 38 phrases in 8 subjects |
| Air defense | 4 |
| Electronics | 7 |
| General | 3 |
| Geophysics | 1 |
| Metallurgy | 1 |
| Space | 2 |
| Technology | 16 |
| Telecommunications | 4 |
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