一层棉布的一层surgical。
一个实验显示的surgical mask 很有效,但是要防漏,从眼睛下方。如果眼镜糊了,说明漏了。
所以我重点防泄漏。一层稍微低点带好夹好,另一层稍微高一点。俩道防线后不漏不糊。
如果去人少的商场,能保持一定距离,我还是棉布口罩。
surgical mask。
室外用布口罩。
"Only 22.5% of US Covid-19 infections recorded in the week that ended on December 18 were linked to Omicron, rather than the 73.2% estimate that was announced last week, the CDC said on Tuesday."
(发自我的文学城离线浏览器)
少出门,保持社交距离,用含75%酒精的擦手液擦手也同等重要。
一层棉布的一层surgical。
一个实验显示的surgical mask 很有效,但是要防漏,从眼睛下方。如果眼镜糊了,说明漏了。
所以我重点防泄漏。一层稍微低点带好夹好,另一层稍微高一点。俩道防线后不漏不糊。
如果去人少的商场,能保持一定距离,我还是棉布口罩。
surgical mask。
室外用布口罩。
"Only 22.5% of US Covid-19 infections recorded in the week that ended on December 18 were linked to Omicron, rather than the 73.2% estimate that was announced last week, the CDC said on Tuesday."
(发自我的文学城离线浏览器)
少出门,保持社交距离,用含75%酒精的擦手液擦手也同等重要。