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| классификация поверхности (Iryna_mudra) | |||
| разделение поверхностей трения (jagr6880) | |||
|
surface separation : 26 phrases in 14 subjects |
| Acoustics | 2 |
| Astronautics | 2 |
| Aviation | 1 |
| Geology | 1 |
| Makarov | 8 |
| Mathematics | 2 |
| Mechanic engineering | 1 |
| Metallurgy | 1 |
| Metrology | 1 |
| Nautical | 2 |
| Oil and gas | 2 |
| Technology | 1 |
| United Nations | 1 |
| Ventilation | 1 |