（十）放射性废物，是指含有放射性核素或者被放射性核素污染，其浓度或者比活度大于国家确定的清洁解控水平，预期不再使用的废弃物。
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Article InformationAuthor, 李洛
A new study reveals that the adult human brain continues to produce new neurons throughout life, a process that is highly active in older individuals with exceptional memories but severely limited in those with Alzheimer’s disease.
· 周杰 · 来源：tutorial资讯