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When finish sewing, how to cut the thread off? Scissors?
What if you do not have scissors around? Teeth?
Autotomy is designed to solve the very problem.
In the eyes of the needle, there is a sharp shape. Take use of the principle of stress concentration, the thread can be easily cut off.
Ying fangtian,Li Bing,Li Xinrui,Li Zhenpeng,Tao Jun, Gao Shanshan
Li Bing,Li Xinrui,Li Zhenpeng,Tao Jun, Gao Shanshan,Ma tailang,Feng Kai