 |
| |||
| resistance head | |||
| сопротивление в трубопроводе: 5 phrases in 5 subjects |
| Ecology | 1 |
| Firefighting and fire-control systems | 1 |
| Hydraulic engineering | 1 |
| Machine tools | 1 |
| Transport | 1 |
|
| |||
| resistance head | |||
| сопротивление в трубопроводе: 5 phrases in 5 subjects |
| Ecology | 1 |
| Firefighting and fire-control systems | 1 |
| Hydraulic engineering | 1 |
| Machine tools | 1 |
| Transport | 1 |