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铀系年代测定
释义
铀系年代测定
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工学
〔地学中核技术〕
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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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seed manure
seed-mediated transgene flow
seed moisture content of herbage species
seed multiplication of crop
seed nucleus
seed of life
seed orchard
seed pelleter
seed plant
seed polisher
seed pregermination
seed processing machinery
seed production
seed production area
seed production of rapeseed
seed production of rapeseed conventional cultivar
seed production stand
seed rearing
seed rearing of Black grunt ,seed rearing of Hapalogenys nitens
seed rearing of Boleophthalmus pectinirostris
seed rearing of Chanos chanos
seed rearing of Chelon haematocheilus
seed rearing of Chromileptes altivelis
seed rearing of Crassostrea gigas
seed rearing of Crassostrea gigas angulata
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