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uranium series dating
铀系年代测定
应用自然界放射性核素(铀钍系、不平衡铀系)衰变规律来确定各种地质对象年龄的一种同位素地质年代学方法,即通过测定样品中铀系衰变子体与母体的比值计算样品年龄,诸如采用传统α能谱与热电离质谱铀系技术(TIMS)进行U-Hh测年。
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ancestral hall at Zhencheng Mansion of Hongkeng Village, Yongding County
Ancestral Hall of Simaqian
ancestral hall theatre
ancestral inheriting
ancestral range reconstruction
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Ancestral Temple of Lei
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anchor
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anchored bar in rock
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