radiocarbon stratigraphy
... radiocarbon dating 放射性碳测定年龄 radiocarbon stratigraphy 放射性碳地层学 radiocarbon tracer 放射性碳示踪物 ...
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因为他们象地层学那样依赖相关的技术进行推测，其精确度不如用放射性碳元素断定或根据记录来断定年代的方法。
Because they rely on estimation, relative techniques like stratigraphy are considered less precise than absolute techniques, like radiocarbon dating or verification from written records.
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