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распространение пламени: 21 phrases in 12 subjects |
Aerodynamics | 1 |
Automobiles | 2 |
Aviation | 2 |
Chemistry | 1 |
Construction | 1 |
Energy industry | 4 |
Firefighting and fire-control systems | 2 |
Military | 2 |
Missiles | 1 |
Shipbuilding | 3 |
Silicate industry | 1 |
Technology | 1 |