постоянная скорость: 42 phrases in 14 subjects |
Astronautics | 2 |
Automated equipment | 1 |
Aviation | 9 |
Chemistry | 1 |
Computers | 1 |
Forestry | 1 |
Hydraulic engineering | 4 |
Mechanic engineering | 3 |
Metallurgy | 2 |
Radio | 1 |
Technology | 6 |
Textile industry | 6 |
Trucks/Lorries | 3 |
Welding | 2 |