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Dislocations in which the Burgers vector is perpendicular ...
Invented by Farmer Wu Yulu in a village outside of Beijing, ...
Wrought steels are shaped by plastic deformation(mechanical ...
A three-wheeled automobile self-made by a 47 years old ...
Invented by Farmer Wu Yulu in a village outside of ...
A 1.6 ton homemade submarine mostly assembled from metal ...