alarm circuit: 33 phrases in 12 subjects |
Automobiles | 2 |
Aviation | 1 |
Computers | 1 |
Electronics | 2 |
Firefighting and fire-control systems | 4 |
Gyroscopes | 1 |
Information security and data protection | 1 |
Mass media | 1 |
Security systems | 5 |
Technology | 5 |
Telecommunications | 9 |
Transport | 1 |