Hydrogen Fluoride: 33 phrases in 13 subjects |
Astronautics | 1 |
Caspian | 1 |
Chemistry | 12 |
Firefighting and fire-control systems | 1 |
Lasers | 1 |
Makarov | 2 |
Military | 3 |
Nanotechnology | 2 |
Natural resourses and wildlife conservation | 1 |
Nuclear physics | 2 |
Oil / petroleum | 1 |
Oil processing plants | 3 |
Technology | 3 |