历史上最伟大发明的真相
un with Leonardo da Vinci’s scribbling and continued all the way to the 19th century gliders of Otto Liliental. But the Wrights solved one of the most nagging21) problems facing airplane developers—stability—by having “a single cable warp22) the wing and turn the rudder23) at the same time.” That was the tweak that put the first plane in the air.
Television
The “Farnsworth
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