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circuit switch : 112 phrases in 20 subjects |
| Astronautics | 2 |
| Automobiles | 2 |
| Caspian | 1 |
| Communications | 1 |
| Computers | 1 |
| Construction | 1 |
| Electrical engineering | 7 |
| Electricity | 1 |
| Electronics | 13 |
| Energy industry | 1 |
| Makarov | 32 |
| Mass media | 1 |
| Mathematics | 1 |
| Microsoft | 1 |
| Military | 3 |
| Radioengineering | 1 |
| Rail transport | 2 |
| Technology | 38 |
| Telecommunications | 2 |
| Transport | 1 |