 |
| |||
| helical blade (MichaelBurov); spiral blade (MichaelBurov) | |||
| spiral blade (стабилизатора бурильной колонны Bauirjan) | |||
| serpentine vane (завихрителя) | |||
| helical blade | |||
| спиральная лопасть: 7 phrases in 6 subjects |
| Automated equipment | 1 |
| Chemistry | 1 |
| Metallurgy | 1 |
| Nautical | 1 |
| Oil / petroleum | 2 |
| Sakhalin R | 1 |