The prediction of the concentration of radioactive nuclides is the basis and premise of emergency action and radioprotection. 放射性核素浓度的确定是放射性事故抢险救援和辐射防护等工作的基础和前提，是放射性事故应急救援的重要组成部分。
The application of radioactive isotopes to solid state physics and material science is reviewed and the perspectives with high energy radioactive ion beams are discussed. 摘要回顾了放射性核素在固体物理和材料科学中的应用，并对高能放射性束流的应用前景作了展望。
