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according to the offs-
et parallel lines,making
the "ON"and"OFF" bu-
tton segmentation and
stack. finally coming to
the switch of shading,
uping means to open
the switch,and present
the letter "ON"
The button is basis on
flakeplastic(formed by
the opaque and trans-
parent plastic interval)
Zhejiang Sci-Tech University
Hangzhou, China
Zhejiang Sci-Tech University
Hangzhou, China
Guangbo Wang, Weijie Kong, Yayun Wen, Zhang Cheng
