脉冲 发生 器 : 298 phrases in 21 subjects |
Air defense | 32 |
Astronautics | 1 |
Automobiles | 13 |
Aviation | 7 |
Construction | 6 |
Drilling | 3 |
Earth sciences | 3 |
Electric machinery | 2 |
Electronics | 58 |
General | 5 |
Geophysics | 10 |
Information technology | 3 |
Metallurgy | 17 |
Nuclear and fusion power | 2 |
Oil / petroleum | 10 |
Radio | 1 |
Shipbuilding | 3 |
Space | 11 |
Sports | 1 |
Technology | 104 |
Telecommunications | 6 |