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isotopic chrono1ogy
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isotopic chrono1ogy
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工学
同位素年代学
释
isotopic chrono1ogy
同位素年代学
依据放射性衰变定律,通过测定自然界样品中放射性核素及其衰变产物稳定子体含量,或者利用放射性射线和裂变碎片对周围物质作用产生的核效应及其影响程度,计算岩石、矿物或其他物质形成事件的年龄,研究地球和太阳系星球演化时间序列的学科。
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Pederson
pedestal
pedestal crater
pedestrian and bicycle traffic system
pedestrian and non-motor vehicle transportation planning
pedestrian bridge
pedestrian crossing facilities
pedestrian detection
pedestrian management
pedestrian navigation
pedestrian pocket
pedestrians overpass facilities
pedestrian street
pedestrian system
pedestrian transport facilities
pedial
pediatric occupational therapy
pediatric physical therapy
pediatrics
pediatric speech therapy
pedicel
pedicellaria
pediculosis
pedigree
pedigree analysis
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