将佩戴6小时后的口罩剪开,取外层,裁剪成长宽各均为1mm左右的样品,装样并用SEM观察,调整清晰度和放大比例后拍照。
Cut the mask after wearing for 6 hours, take the outer layer, cut the samples with a length and width of about 1mm, load the samples and observe them with SEM, and take photos after adjusting the definition and magnification.