warning device: 77 phrases in 28 subjects |
Apollo-Soyuz | 1 |
Artillery | 1 |
Astronautics | 1 |
Automated equipment | 4 |
Automobiles | 1 |
Aviation | 6 |
Aviation medicine | 2 |
British usage, not spelling | 1 |
Construction | 4 |
Electronics | 1 |
Energy industry | 1 |
Firefighting and fire-control systems | 1 |
General | 1 |
Information technology | 1 |
Lasers | 3 |
Medical | 1 |
Medical appliances | 2 |
Military | 14 |
Natural resourses and wildlife conservation | 2 |
Nautical | 2 |
Occupational health & safety | 1 |
Quality control and standards | 3 |
Refrigeration | 1 |
Road works | 2 |
Security systems | 9 |
Signalling | 1 |
Technology | 7 |
Transport | 3 |