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| 21. | navigation facilities |
| 通航设施 |
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| 22. | surface navigation |
| 水面航行 |
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| 23. | navigation bonus |
| 航海奖励金 |
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| 24. | navigation marker |
| 导航标志, 航标 |
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| 25. | navigation certificate |
| 航行证书航运执照 |
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| 26. | navigation equipment |
| 导航设备 |
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| 27. | navigation constant |
| 导航常数 |
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| 28. | navigation mark |
| 航道标志导航标志 |
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| 29. | navigation coordinates |
| 导航坐标 |
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| 30. | navigation message |
| 导航电文 |
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