 |
| jaillissement: 26 phrases in 14 subjects |
| Armored vehicles | 1 |
| Automated equipment | 2 |
| Electronics | 2 |
| Food industry | 2 |
| General | 1 |
| Geology | 1 |
| Mechanic engineering | 2 |
| Mining | 2 |
| Oil and gas technology | 6 |
| Physics | 1 |
| Platform diving | 1 |
| Technology | 1 |
| Trucks/Lorries | 2 |
| Welding | 2 |