時就玄了
N95 就是透過5%,普通口罩透過70%,暴露量差14倍。既然醫護上N95幹8小時頂不住,戴普通口罩在醫院同一區域呆一小
本帖於 2022-12-31 00:59:25 時間, 由普通用戶 周老大 編輯
時就玄了
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