 |
| 喷 头: 167 phrases in 17 subjects |
| Astronautics | 5 |
| Aviation | 1 |
| Construction | 3 |
| Drilling | 5 |
| Electronics | 1 |
| Firefighting and fire-control systems | 4 |
| General | 40 |
| Mining | 1 |
| Nautical | 3 |
| Oil / petroleum | 2 |
| Oil processing plants | 7 |
| Oilfields | 1 |
| Perfume | 1 |
| Plumbing | 1 |
| Polymers | 2 |
| Technology | 88 |
| Textile industry | 2 |