 |
| air sampler: 27 phrases in 15 subjects |
| Astronautics | 1 |
| Cement | 2 |
| Construction | 1 |
| Ecology | 1 |
| Electronics | 2 |
| Energy industry | 3 |
| Mining | 4 |
| Natural resourses and wildlife conservation | 3 |
| Occupational health & safety | 1 |
| Oil and gas | 1 |
| Oilfields | 1 |
| Physics | 1 |
| Road works | 2 |
| Technology | 2 |
| Weapons of mass destruction | 2 |