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FYI X 光剂量比较。
micah
(mica)
一个口腔全景panorama 是10。正常人一天的背景射线剂量是10。一张胸部X片是50。
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Last Updated: 2-7
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请问牙齿照X 光会影响甲状腺素的分泌吗?去洗牙,
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