Radon in our homes is the main source of exposure to ionizing radiation, and accounts for 50% of the public's exposure to naturally-occurring sources of radiation in many countries.

我们家中的氡是接触致电离辐射的主要来源，在许多国家中占大众接触自然发生的辐射源的50%。

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Conclusions Imaging procedures are an important source of exposure to ionizing radiation in the United States and can result in high cumulative effective doses of radiation.

结论：在美国，影像操作是一个重要的电离辐射暴露来源，并可导致较高的辐射累积有效剂量。

youdao

Conclusions Imaging procedures are an important source of exposure to ionizing radiation in the United States and can result in high cumulative effective doses of radiation.

结论：在美国，影像操作是一个重要的电离辐射暴露来源，并可导致较高的辐射累积有效剂量。

youdao