Radioactivity concentrations of <sup>226</sup>Ra, <sup>232</sup>Th and <sup>40</sup>K radionuclides in the various building media under study.
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AM±SD denotes arithmetic mean±standard deviation. Radioactivity concentrations of 226Ra, 232Th and 40K radionuclides in the various building media under study.
创建时间：
2015-10-16
