safety alarm : 21 phrases in 12 subjects |
Armored vehicles | 1 |
Automobiles | 1 |
Electrical engineering | 1 |
Electronics | 4 |
Energy industry | 2 |
Firefighting and fire-control systems | 2 |
Nuclear physics | 1 |
Oil / petroleum | 1 |
Production | 2 |
Technology | 1 |
Telecommunications | 4 |
Transport | 1 |