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коэффициент трения : 107 phrases in 28 subjects |
| Aerodynamics | 4 |
| Artillery | 2 |
| Automobiles | 8 |
| Aviation | 5 |
| Chemistry | 4 |
| Construction | 7 |
| Energy industry | 7 |
| Geology | 1 |
| Geophysics | 1 |
| Hydraulics | 1 |
| Hydrology | 3 |
| Machine components | 6 |
| Metallurgy | 7 |
| Metalworking | 1 |
| Mining | 4 |
| Natural resourses and wildlife conservation | 1 |
| Oil / petroleum | 7 |
| Plastics | 1 |
| Polymers | 2 |
| Rail transport | 9 |
| Road works | 3 |
| Shipbuilding | 2 |
| Sports | 1 |
| Technology | 11 |
| Textile industry | 2 |
| Thermal engineering | 1 |
| Tribology | 1 |
| Water supply | 5 |