倒相 器 : 70 phrases in 14 subjects |
Agriculture | 2 |
Air defense | 1 |
Aviation | 2 |
Construction | 2 |
Earth sciences | 1 |
Electronics | 25 |
General | 5 |
Geophysics | 1 |
Information technology | 1 |
Metallurgy | 1 |
Oil / petroleum | 3 |
Shipbuilding | 1 |
Space | 2 |
Technology | 23 |