地 磁场 : 63 phrases in 13 subjects |
Aviation | 2 |
Earth sciences | 2 |
Electronics | 2 |
Engineering geology | 2 |
General | 4 |
Geophysics | 3 |
Hydroelectric power stations | 1 |
Information technology | 1 |
Metallurgy | 1 |
Nautical | 1 |
Oil / petroleum | 13 |
Space | 8 |
Technology | 23 |