狗了一下，牙医的数码xray 放射量相当于坐一小时飞机，比每天从环境接受的放射小很多，铅围脖不是 required.

来源: 妙妙~ 于 2019-09-14 11:52:30 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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