To improve the measurement accuracy of the radionuclide activity by verified the medical activity meter of user in order to reduce unnecessary exposure.

目的：通过对医用活度计的检验，改善放射性核素活度的测量准确性，减少不必要的照射。

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The measured activity concentrations for these natural radionuclide were compared with the reported data for other countries.

这些天然放射性核素的活度浓度与其他国家报告的数据进行比较。

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