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| 精确自动同步机 | |||
| 精读数自整角机 | |||
| 精示自动同步机 | |||
| 精调自动同步机 | |||
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fine selsyn : 12 phrases in 4 subjects |
| Air defense | 6 |
| Shipbuilding | 2 |
| Space | 2 |
| Technology | 2 |
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