spiral gear : 39 phrases in 13 subjects |
Armored vehicles | 2 |
Automated equipment | 7 |
Automobiles | 5 |
Aviation | 2 |
Construction | 1 |
Gear train | 5 |
General | 1 |
Machine tools | 1 |
Mechanic engineering | 5 |
Polymers | 1 |
Rail transport | 1 |
Technology | 5 |
Transport | 3 |