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| 工程和研制［研发］ | |||
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engineering and development : 53 phrases in 12 subjects |
| Air defense | 3 |
| Aviation | 12 |
| Business | 1 |
| Company name | 1 |
| Consulting | 1 |
| Earth sciences | 11 |
| Electronics | 6 |
| General | 5 |
| Mining | 1 |
| Navigation | 3 |
| Space | 6 |
| United States | 3 |
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