 |
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| 科学技术信息中心美国 | |||
| 科学技术情报中心 | |||
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| 科学技术信息中心 | |||
| 科技信息中心 | |||
| Scientific and Technical Information Center: 10 phrases in 7 subjects |
| Aviation | 1 |
| Business | 2 |
| Earth sciences | 1 |
| Electronics | 3 |
| General | 1 |
| Telecommunications | 1 |
| United States | 1 |
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| 科学技术信息中心美国 | |||
| 科学技术情报中心 | |||
| |||
| 科学技术信息中心 | |||
| 科技信息中心 | |||
| Scientific and Technical Information Center: 10 phrases in 7 subjects |
| Aviation | 1 |
| Business | 2 |
| Earth sciences | 1 |
| Electronics | 3 |
| General | 1 |
| Telecommunications | 1 |
| United States | 1 |