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| 海事通信中心 | |||
| 海岸中心 | |||
| 海上中心连接海上陆地电路的卫星地球站 | |||
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maritime center : 10 phrases in 6 subjects |
| Air defense | 1 |
| Earth sciences | 1 |
| Electronics | 2 |
| Navigation | 3 |
| Technology | 1 |
| Telecommunications | 2 |
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