 |
| long -stroke: 31 phrases in 14 subjects |
| Automated equipment | 2 |
| Automobiles | 1 |
| Drilling | 1 |
| Electronics | 1 |
| Mechanic engineering | 1 |
| Nautical | 1 |
| Oil / petroleum | 3 |
| Oil and gas | 7 |
| Oil and gas technology | 2 |
| Oilfields | 1 |
| Pipelines | 2 |
| Plastics | 1 |
| Technology | 7 |
| Thermal engineering | 1 |