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| regulating amplifier; resonance amplifier | |||
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调节放大器 : 16 phrases in 8 subjects |
| Electric machinery | 1 |
| Electronics | 2 |
| General | 1 |
| Geophysics | 1 |
| Metallurgy | 2 |
| Shipbuilding | 1 |
| Space | 1 |
| Technology | 7 |
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