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fraction of void |
степень материала : 22 phrases in 13 subjects |
Building materials | 5 |
Caspian | 1 |
Cement | 1 |
Construction | 1 |
Education | 1 |
Firefighting and fire-control systems | 4 |
General | 3 |
Geology | 1 |
Makarov | 1 |
Military | 1 |
Oil / petroleum | 1 |
Perfume | 1 |
Power system protection | 1 |