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| 电罗经陀螺罗经航向 | |||
| 陀螺罗航向 | |||
| English thesaurus | |||
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| cpgc | |||
| gyrocompass course: 5 phrases in 3 subjects |
| Shipbuilding | 2 |
| Space | 1 |
| Technology | 2 |
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