选择开关 : 102 phrases in 18 subjects |
Air defense | 1 |
Automobiles | 19 |
Aviation | 13 |
Business | 1 |
Compressors | 1 |
Computer numerical control | 1 |
Construction | 1 |
Dermatology | 2 |
Electronics | 10 |
Geophysics | 3 |
Oil / petroleum | 1 |
Plastics | 1 |
Project management | 2 |
Shipbuilding | 4 |
Space | 8 |
Technology | 30 |
Telecommunications | 3 |
Wind Energy | 1 |