 |
|
alarm circuit : 35 phrases in 14 subjects |
| Air defense | 1 |
| 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 |
| Non-destructive testing | 1 |
| Security systems | 5 |
| Technology | 5 |
| Telecommunications | 9 |
| Transport | 1 |