 |
| pressure reducer: 22 phrases in 14 subjects |
| Astronautics | 1 |
| Automobiles | 3 |
| Aviation | 2 |
| Construction | 1 |
| Drilling | 1 |
| Electronics | 2 |
| Mechanic engineering | 3 |
| Nautical | 1 |
| Occupational health & safety | 1 |
| Oil and gas | 3 |
| Oil and gas technology | 1 |
| Refrigeration | 1 |
| Technology | 1 |
| Ventilation | 1 |