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Traces of time / Mask

Traces of time
Traces of time

Under the epidemic situation, people wear masks in order to live a healthy life. But people still can't tell the front and back of the mask from the timeliness. Ordinary people can distinguish the positive and negative sides by eye observation, or by looking at the cleanliness of the mask surface to distinguish whether there is a protective effect, but these judgments are still not accurate. The blind will encounter more problems.

University

Dalian Nationalities University

Dalian Minzu University
Dalian, China

Yutong Hu,
Dalian Minzu University

Tao Yan,
Dalian Minzu University

Chunming Wang,
Dalian Minzu University

Zichao Miao,
Dalian Minzu University

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