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| 41. | Infrared Beacon |
| 红外线信号柱 |
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| 42. | beacon satellite |
| 航标卫星 |
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| 43. | beacon tracking |
| 信标跟踪 |
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| 44. | circular beacon |
| 全向无线电指向标 |
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| 45. | beacon transmitter |
| 无线电指向标发射机 |
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| 46. | emergency beacon |
| 紧急救援无线电信标 |
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| 47. | aeronautical beacon |
| 航空灯标;航空信号灯 |
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| 48. | Microwave Beacon |
| 微波无线电航标 |
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| 49. | beacon skipping |
| 【电子】指向标失答 |
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| 50. | airport Beacon |
| 机场灯标 |
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