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| 61. | ground-based observation |
| 地面观测 |
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| 62. | aeronautical ground light |
| 地面航行灯 |
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| 63. | above ground leve |
| 高出地面 |
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| 64. | ground bearing pressure |
| 地面承载力 |
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| 65. | natural ground surface |
| 天然地面 |
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| 66. | ground follow-up |
| 地面查证 |
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| 67. | ground control center |
| 地面控制中心 |
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| 68. | illuminance of ground |
| 地面照度 |
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| 69. | ground de-icing |
| 地面除冰 |
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| 70. | ground control point |
| 地面控制点 |
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