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Autogyros have unpowered rotors, with a separate power ...
Composition of 0.96%-2.1% carbon. Its high carbon content ...
Rotorcraft, or rotary-wing aircraft, use a spinning rotor ...
Silicon steels contains approximate 0.05 percent carbon and ...
Aela the Huntress is the only female who becomes the elite ...
Ceramic Land is one of the most well-known failures of ...
Back in the 1930s or 1940s, a school bus full of children ...
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A single-seater helicopter that is made by a 20-year-old ...
A 1.6 ton homemade submarine mostly assembled from metal ...
Invented by Farmer Wu Yulu in a village outside of ...