口罩的细孔的直径大于病毒直径。真遇上病毒的话，靠戴口罩来屏蔽病毒是无效的。

来源: OneMoreCent 于 2022-01-10 08:36:15 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.