频 偏 : 183 phrases in 22 subjects |
Air defense | 18 |
Automobiles | 2 |
Aviation | 6 |
Business | 2 |
Communications | 3 |
Corporate governance | 2 |
Electronics | 22 |
General | 8 |
Geophysics | 5 |
Hydroelectric power stations | 2 |
Information technology | 4 |
Metallurgy | 3 |
Multimedia | 1 |
Nautical | 1 |
Oil / petroleum | 8 |
Piezoelectric crystals | 5 |
Securities | 1 |
Shipbuilding | 2 |
Space | 31 |
Statistics | 1 |
Technology | 36 |
Telecommunications | 20 |