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.
所有跟帖:
• 更有單位麵積的密集度和與距離成反比的考量。 -華灜- ♀ (0 bytes) () 09/14/2019 postreply 16:11:49
• 更有單位麵積的密集度和與距離成反比的考量。 -華灜- ♀ (0 bytes) () 09/14/2019 postreply 16:11:49
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