 |
| центральное отверстие: 28 phrases in 17 subjects |
| Astronomy | 1 |
| Automated equipment | 1 |
| Automobiles | 3 |
| Combustion gas turbines | 1 |
| Construction | 1 |
| Drawing | 3 |
| Drilling | 1 |
| Food industry | 1 |
| Mass media | 3 |
| Mechanic engineering | 1 |
| Mining | 1 |
| Nautical | 1 |
| Paleontology | 1 |
| Polymers | 2 |
| Technology | 3 |
| Transport | 3 |
| Wood processing | 1 |