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| dwukrotny; podwójny | |||
| مضاعف: 39 phrases in 13 subjects |
| Antennas and waveguides | 2 |
| Electric traction | 4 |
| Electronics | 1 |
| Lighting other than cinema | 2 |
| Metrology | 2 |
| Power lines | 5 |
| Radiology | 2 |
| Rail transport | 1 |
| Semiconductors | 2 |
| Telecommunications | 2 |
| Telegraphy | 14 |
| Thermal Energy | 1 |
| Vacuum tubes | 1 |