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| 频带放大器; 带通放大器 | |||
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band amplifier : 29 phrases in 10 subjects |
| Air defense | 4 |
| Earth sciences | 1 |
| Electronics | 8 |
| Hydroelectric power stations | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Shipbuilding | 5 |
| Space | 2 |
| Technology | 4 |
| Telecommunications | 2 |
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