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| contact spring: 29 phrases in 12 subjects |
| Armored vehicles | 2 |
| Automated equipment | 2 |
| Automobiles | 3 |
| Electrical engineering | 2 |
| Electronics | 4 |
| Hydrology | 1 |
| Machinery and mechanisms | 1 |
| Mass media | 4 |
| Technology | 6 |
| Telecommunications | 1 |
| Transport | 2 |
| Water resources | 1 |