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研究和发展
tech.
research and development
研 究和发展:
68 phrases
in 14 subjects
Air defense
1
Aviation
19
Earth sciences
8
General
6
Information technology
1
Management
1
Name of organization
7
Oil / petroleum
1
Portuguese
1
Space
2
Technology
12
United Kingdom
1
United Nations
6
United States
2
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