external connections: 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 |