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blades (5) |
wind turbines (4) |
inventions (2) |
invenţii (2) |
aerodynamic efficiency (1) |
airfoils (1) |
brevete de invenție (1) |
invenții (1) |
IPC: F03D 7/02 (2006.01) (1) |
IPC: F03D 80/00 (2016.01) (1) |
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