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| technical classification | |||
| classification of technology | |||
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技术分类 : 18 phrases in 11 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| Bridge construction | 1 |
| Business | 1 |
| Commerce | 1 |
| Earth sciences | 1 |
| Electronics | 1 |
| General | 2 |
| International trade | 1 |
| Statistics | 6 |
| Technology | 2 |
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