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Midpoint / shoelaces


when we tie our shoelaces.we
always find the opposite sides
of a shoelace are differ in len-
gth.Then we have to make it
MIDPOINT is a shoelace.There
have a opophysis in the middl-
e of it.The opoplysis can be lo-
cked by the small holes.So the
shoelaces can easy to keeping


Jiangnan University

Jiangnan University
Wuxi, China


Jiangnan University

Jiangnan University
Wuxi, China

Jia peng Zhu lin Fan Jianjun Zhao bin Liang Hongyu