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Zip-top cans can be seen everywhere in our daily life. With its popularization, however, we find out a problem, that is, one can not hold many drinks due to the given shape and volume of the zip-top cans. For example, it is pretty troublesome to answer a phone when you take cans with both hands.
ZheJiang University
ZiJingGang Campus
Hangzhou, China
Yingping Cao,
ZheJiang University
Liuan Xiang,
Zhejiang University