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energie eoliană (6) |
invenţii (6) |
turbine eoliene cu ax vertical (6) |
inventions (3) |
wind energy conversion (3) |
brevete de invenţie (2) |
IPC: F03D 3/02 (2006.01) (2) |
vertical axis wind turbines (2) |
wind turbines with vertical axis (2) |
blades (1) |
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