Tree-ring width of Quercus species from historical object sample 6636B/08A, G...
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Species: Quercus species; No of rings: 48; Age not determined; Pith: not applicable; Heartwood: absent; Sapwood: absent; Number of sapwood rings: 0; Last ring under bark: absent
物种：栎属（Quercus）物种；年轮数：48；树龄未测定；髓（pith）不适用；心材（heartwood）缺失；边材（sapwood）缺失；边材年轮数为0；树皮下方无末次年轮
