本文研究U系和Th系长寿命α放射性核素在同一块骨骼不同类骨(松质骨、松质及密质混合骨、密质骨)中的分布,并估算其辐射剂量.结果表明,铀系和钍系的长寿命核素在同一例骨骼的各类骨中的分布是相当均匀的.虽然低水平放射性测量其误差较大,但是在正常本底地区,人们骨骼中这些核素的浓度并不存在很大差异.各类 In this paper, we study the distribution of long-lived α-radionuclides in U-line and Th-line in the same skeletal bone (cancellous bone, cancellous and dense bone, dense bone) and estimate their radiation dose.The results show that, The distribution of uranium and thorium long-lived nuclides is fairly uniform in all bones of the same skeleton, and although the errors in low-level radiometric measurements are greater, in normal basal regions, the presence of these nuclides in human bones There is not much difference in concentration