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71. | horizontal navigatio |
| 平面导航 |
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72. | pictorial navigation display |
| 图示导航 |
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73. | land navigation |
| 地面导航 |
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74. | correlation navigation |
| 相关导航 |
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75. | laser navigation |
| 激光导航 |
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76. | guidance beacon |
| 导航浮标 |
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77. | guiding aircraft |
| 导航机 |
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78. | magnetometric guidance |
| 磁力计导航 |
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79. | compass, navigational |
| 导航罗盘 |
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80. | computerised navigation |
| 计算机化导航 |
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