狗了一下，牙醫的數碼xray 放射量相當於坐一小時飛機，比每天從環境接受的放射小很多，鉛圍脖不是 required.

來源: 妙妙~ 於 2019-09-14 11:52:30 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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