 |
| joint coupling: 30 phrases in 14 subjects |
| Armored vehicles | 1 |
| Automated equipment | 3 |
| Automobiles | 6 |
| Construction | 2 |
| Mechanic engineering | 4 |
| Mechanics | 1 |
| Mining | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 3 |
| Oil and gas technology | 2 |
| Rail transport | 2 |
| Robotics | 1 |
| Technology | 1 |
| Transport | 2 |