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| двоякая кривизна | |||
| courbure double: 33 phrases in 11 subjects |
| Aviation | 3 |
| Construction | 10 |
| Hydraulic engineering | 6 |
| Mathematics | 3 |
| Mechanic engineering | 1 |
| Metallurgy | 1 |
| Radio | 1 |
| Surveying | 2 |
| Technology | 4 |
| Textile industry | 1 |
| Trucks/Lorries | 1 |
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