Tree-ring width of Quercus species from historical object sample 6597B/03A, N...
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Species: Quercus species; No of rings: 21; Age not determined; Pith: not applicable; Heartwood: complete; Sapwood: incomplete; Number of sapwood rings: 5; Last ring under bark:...
样本物种：栎属（Quercus）树种；总年轮数：21；树龄未测定；髓心：不适用；心材：完整；边材：不完整；边材年轮数：5；树皮下的最新年轮：……
