螺 旋齿 : 90 phrases in 19 subjects |
Agriculture | 4 |
Automobiles | 7 |
Aviation | 2 |
Compressors | 2 |
Dermatology | 2 |
Electronics | 1 |
Engineering geology | 1 |
General | 3 |
Hydroelectric power stations | 7 |
Mechanic engineering | 2 |
Mechanics | 1 |
Metallurgy | 3 |
Oil / petroleum | 2 |
Plastics | 1 |
Shipbuilding | 2 |
Space | 2 |
Technology | 41 |
Textile industry | 1 |
Wind Energy | 6 |