化学教学新课堂:科学抗疫中的化学知识
吴静, 戚洪彬, 王英滨

A New Classroom for Chemistry Teaching: Chemical Knowledge in the Fight against COVID-19 Epidemic
Jing Wu, Hongbin Qi, Yingbin Wang
图1 口罩的结构
口罩结构模型来源于网络[4]