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external connection : 43 phrases in 14 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Dental implantology | 8 |
| Electrical engineering | 1 |
| GOST | 12 |
| Nautical | 2 |
| Production | 1 |
| Programming | 1 |
| Refrigeration | 3 |
| Sakhalin | 2 |
| Submarines | 1 |
| Technology | 6 |
| Telecommunications | 3 |
| Television | 1 |