регулятор уровня: 27 phrases in 11 subjects |
Acoustics | 2 |
Electronics | 1 |
Food industry | 2 |
Forestry | 1 |
Hydraulic engineering | 10 |
Metallurgy | 1 |
Natural resourses and wildlife conservation | 1 |
Oil and gas technology | 2 |
Packaging | 1 |
Technology | 3 |
Trucks/Lorries | 3 |