 |
| product gas: 53 phrases in 20 subjects |
| Aluminium industry | 1 |
| Astronautics | 1 |
| Cement | 1 |
| Chemical industry | 1 |
| Chemistry | 1 |
| Electronics | 3 |
| Energy industry | 3 |
| Firefighting and fire-control systems | 1 |
| Gas processing plants | 18 |
| General | 1 |
| Industry | 4 |
| Metallurgy | 4 |
| Nanotechnology | 1 |
| Nuclear physics | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 4 |
| Oil and gas technology | 1 |
| Oil processing plants | 4 |
| Technology | 1 |
| Thermal engineering | 1 |