 |
| mechanical switching: 42 phrases in 16 subjects |
| Automated equipment | 4 |
| Construction | 1 |
| Electrical engineering | 7 |
| Electronics | 7 |
| General | 1 |
| Mechanics | 1 |
| Military | 1 |
| Power system protection | 1 |
| Programming | 3 |
| Quantum electronics | 2 |
| Rail transport | 1 |
| Robotics | 1 |
| Signalling | 1 |
| Technology | 9 |
| Telecommunications | 1 |
| Transport | 1 |