 |
| worm gear: 150 phrases in 27 subjects |
| Armored vehicles | 9 |
| Astronomy | 1 |
| Automated equipment | 16 |
| Automobiles | 29 |
| Aviation | 1 |
| Cement | 2 |
| Drilling | 2 |
| Electronics | 1 |
| Energy industry | 1 |
| Gear train | 18 |
| General | 1 |
| Machinery and mechanisms | 1 |
| Makarov | 3 |
| Mechanic engineering | 14 |
| Mechanics | 3 |
| Metallurgy | 1 |
| Nautical | 3 |
| Oilfields | 2 |
| Oils and lubricants | 1 |
| Press equipment | 1 |
| Pumps | 2 |
| Rail transport | 2 |
| Robotics | 1 |
| Roll stock | 1 |
| Technology | 12 |
| Thermal engineering | 2 |
| Transport | 20 |