 |
| |||
| токи естественного происхождения | |||
| |||
| естественные земные токи | |||
| |||
| земной ток | |||
| natural currents: 14 phrases in 10 subjects |
| Antennas and waveguides | 1 |
| Cement | 1 |
| Electricity | 2 |
| Electrochemistry | 1 |
| Geology | 2 |
| Geophysics | 1 |
| Mass media | 1 |
| Mining | 1 |
| Programming | 1 |
| Technology | 3 |