 |
| protective device: 38 phrases in 16 subjects |
| Automated equipment | 2 |
| Construction | 1 |
| Electric machinery | 2 |
| Electrical engineering | 2 |
| Electricity generation | 1 |
| Electronics | 2 |
| Energy industry | 1 |
| Environment | 1 |
| General | 1 |
| Industry | 1 |
| Labor law | 9 |
| Mechanic engineering | 1 |
| Nuclear physics | 3 |
| Physics | 1 |
| Technology | 3 |
| Transport | 7 |