 |
| pressure pipe: 56 phrases in 14 subjects |
| Automobiles | 2 |
| Construction | 10 |
| Drilling | 1 |
| Electronics | 1 |
| Engines | 2 |
| General | 3 |
| Materials science | 1 |
| Mechanic engineering | 10 |
| Metallurgy | 3 |
| Natural resourses and wildlife conservation | 1 |
| Nuclear physics | 2 |
| Physics | 1 |
| Technology | 17 |
| Transport | 2 |