步进电 机 : 77 phrases in 17 subjects |
Air defense | 2 |
Automobiles | 7 |
Aviation | 1 |
Business | 1 |
Communications | 1 |
Compressors | 2 |
Electric machinery | 25 |
Electric motors | 1 |
Electronics | 3 |
General | 1 |
Mathematics | 1 |
Metallurgy | 4 |
Refrigeration | 1 |
Shipbuilding | 1 |
Space | 2 |
Technology | 23 |
Wind Energy | 1 |