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| 科学研究发展局美; 科学研究开.发局美; 研究发展局美国 | |||
| 研究开发部 | |||
| 研究与发展局美; 科学研究发展局美 | |||
| 研究与发展委员会美国 | |||
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| 研究与发展局 | |||
| English thesaurus | |||
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| RDB | |||
| Research and Development Board: 8 phrases in 6 subjects |
| Aviation | 1 |
| Earth sciences | 1 |
| Electronics | 2 |
| General | 2 |
| Oil / petroleum | 1 |
| Space | 1 |
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