直流电动机 : 112 phrases in 17 subjects |
Air defense | 1 |
Automobiles | 11 |
Aviation | 1 |
Compressors | 2 |
Drilling | 3 |
Electric machinery | 41 |
Electric motors | 1 |
Electronics | 9 |
Information technology | 3 |
Metallurgy | 8 |
Nautical | 1 |
Oil / petroleum | 6 |
Rail transport | 4 |
Shipbuilding | 2 |
Space | 1 |
Technology | 17 |
Wind Energy | 1 |