 |
| double wheel: 44 phrases in 15 subjects |
| Automated equipment | 2 |
| Automobiles | 10 |
| Combustion gas turbines | 1 |
| Construction | 1 |
| Food industry | 1 |
| Gear train | 1 |
| Gyroscopes | 1 |
| Meat processing | 1 |
| Mechanic engineering | 4 |
| Mechanics | 1 |
| Military | 3 |
| Rail transport | 2 |
| Technology | 5 |
| Textile industry | 1 |
| Transport | 10 |