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Doppler tracking
| system
| Doppler tracking | |
| space | 多普勒跟踪 |
| system | |
| gen. | 体 |
| IMF. | 安排 |
| interntl.trade. | 系统分析 |
| met. | 系; 装置 |
| tech. | 制度; 体系; 系统; 方法 |
| |||
| 多普勒跟踪 | |||
|
Doppler tracking system : 16 phrases in 6 subjects |
| Air defense | 1 |
| Aviation | 2 |
| Earth sciences | 1 |
| Electronics | 5 |
| Space | 5 |
| Technology | 2 |
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