|
push-button control : 26 phrases in 13 subjects |
| Construction | 3 |
| Drilling | 1 |
| Electricity | 1 |
| Electronics | 2 |
| Mechanic engineering | 1 |
| Mining | 1 |
| Nautical | 2 |
| Nuclear and fusion power | 1 |
| Oilfields | 1 |
| Programming | 2 |
| Radioengineering | 1 |
| Rail transport | 3 |
| Technology | 7 |