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| unity of form | |||
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形式统 : 31 phrases in 13 subjects |
| Aviation | 2 |
| Business | 1 |
| Commerce | 1 |
| Earth sciences | 1 |
| Electronics | 7 |
| Environment | 1 |
| Information technology | 2 |
| Navigation | 1 |
| Refrigeration | 1 |
| Space | 1 |
| Technology | 11 |
| Telecommunications | 1 |
| Textile industry | 1 |
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