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| Gyrocompass | |||
| 电 罗盘: 44 phrases in 11 subjects |
| Air defense | 3 |
| Automobiles | 2 |
| Aviation | 4 |
| Construction | 1 |
| Electronics | 2 |
| General | 3 |
| Navigation | 1 |
| Oil / petroleum | 5 |
| Port facilities | 1 |
| Space | 12 |
| Technology | 10 |
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