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| 41. | navigating broadcast |
| 导航广播 |
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| 42. | PNR (Primary Navigation Reference) |
| 导航基准 |
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| 43. | omnirange; omnidirectional range |
| 全向导航 |
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| 44. | navigation astronom |
| 导航天文学 |
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| 45. | sonar navigation |
| 声波导航 |
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| 46. | Module Explorer |
| 模块导航 |
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| 47. | space navigation |
| 宇宙导航 |
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| 48. | navigation antenna |
| 导航天线 |
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| 49. | pilot gyroscope |
| 导航陀螺仪 |
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| 50. | navigation beacon |
| 导航信标 |
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