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isotopic chrono1ogy
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isotopic chrono1ogy
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工学
同位素年代学
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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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first boundary value problem
first Brillouin zone
first Brocard Cevian triangle
first Brocard circle
first Brocard point
first Brocard triangle
First Bulgarian Kingdom
first capacity fading
first category
first category set
first cementing interface
first characteristic polynomial
first Chern class
First Child-Birth Ceremony
first-class current
First Collection of Rare Books from Complete Library of Four Treasuries
First Collection of Writings on Heavenly Learning
first collision probability
first-come first-served
first comparison test
first compilation
first complementary law
first component
first condensate
first contact
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