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wind turbines (4) |
inventions (3) |
invenţii (3) |
blades (2) |
aeolian turbines (1) |
microhidropower stations (1) |
planetary precessional multiplicators (1) |
precessional gearing (1) |
prototypes (1) |
rotors (1) |
Now showing items 1-10 of 4