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natural earth currents |
естественные токи: 16 phrases in 11 subjects |
Antennas and waveguides | 1 |
Electricity | 3 |
Electrochemistry | 1 |
Geology | 1 |
Geophysics | 2 |
Mass media | 1 |
Medical | 2 |
Military | 1 |
Oil / petroleum | 1 |
Oil and gas technology | 1 |
Telecommunications | 2 |