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铼-锇年代测定
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铼-锇年代测定
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rhenium-osmium dating
铼-锇年代测定
利用放射性同位素铼-187衰变成锇-187,以测定地质年龄的一种方法。是矿床学乃至地质学领域最重要的定年技术之一。
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reactor stability
reactor structural material
reactor structure
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reactor thermohydraulic design
reactor thermohydraulic experiment
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reactor time constant
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readability of electronic records
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read aloud
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Reader Management of Library
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Reader's Digest Association,Inc.
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