| |||
section ronde | |||
section circulaire | |||
section circulaire (выработки) |
круглого сечения : 40 phrases in 11 subjects |
Aviation | 4 |
Construction | 3 |
Electronics | 2 |
Food industry | 2 |
Forestry | 1 |
Hydraulic engineering | 4 |
Mechanic engineering | 12 |
Metallurgy | 2 |
Mining | 6 |
Technology | 1 |
Textile industry | 3 |