接地极 : 111 phrases in 20 subjects |
Air defense | 5 |
Automobiles | 5 |
Aviation | 2 |
Cables and cable production | 2 |
Chemistry | 1 |
Construction | 1 |
Electric machinery | 6 |
Electronics | 23 |
Engineering geology | 1 |
General | 12 |
Geophysics | 1 |
Hydroelectric power stations | 4 |
Metallurgy | 1 |
Nuclear and fusion power | 1 |
Oil / petroleum | 5 |
Rail transport | 3 |
Shipbuilding | 2 |
Space | 1 |
Technology | 31 |
Telecommunications | 4 |