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spacecraft tracking
| data
| spacecraft tracking | |
| space | 航天器跟踪 |
| data | |
| avia. | 诸元; 信息; 特性; 已知数 |
| desert. | 资料; 数据 |
| dril. | 数据采集和技术分析系统 |
| math. | 数字; 事实 |
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| 航天器跟踪 | |||
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spacecraft tracking : 7 phrases in 4 subjects |
| Air defense | 1 |
| Electronics | 3 |
| Space | 2 |
| Technology | 1 |
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