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| extendible ballistic measuring system | |||
| exterior ballistic measuring system; exterior trajectory measurement system; trajectory tracking system | |||
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外测 系统 : 96 phrases in 12 subjects |
| Air defense | 5 |
| Architecture | 2 |
| Aviation | 16 |
| Earth sciences | 10 |
| Electronics | 9 |
| Geophysics | 4 |
| Librarianship | 10 |
| Metallurgy | 3 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Space | 20 |
| Technology | 15 |
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