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本文简述了目前放射性核素活度计量量值溯源的情况，介绍了国际电离辐射咨询委员会第Ⅱ分组会议关于计量等效性和评价ＳＩＲ标准的决议。
This paper outlines the traceability of the current measurement of radionuclide activity and presents the resolution of the International Group of Ionizing Radiation Subcommittee II on measuring equivalence and evaluating the SIR criteria.