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体内活化分析
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体内活化分析
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中子活化分析
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in vivo activation analysis
体内活化分析
用中子(热中子或快中子)照射生物活体(如人和动物)的某个部位或全身,使体内元素活化,随后用核辐射探测器测定生成核素放出的γ射线,或直接测定核反应的瞬发γ射线,从而实现生物活体的元素分析。
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construction regulations
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Construction Rules of Qing Dynasty
Construction Rules under the Ministry of Works in Qing Dynasty
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Constructions at Work: The Nature of Generalization in Language
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construction simulation of BIM
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