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| lock-in amplifier | |||
| synchro amplifier; synchronizing amplifier | |||
| sync amplifier | |||
| 同步放 大 器: 17 phrases in 8 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Construction | 1 |
| Electronics | 1 |
| General | 2 |
| Space | 2 |
| Technology | 8 |
| Telecommunications | 1 |
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