Tree-ring width of Quercus species from historical object sample 6672B/13A, N...

Species: Quercus species; No of rings: 40; Age not determined; Pith: not applicable; Heartwood: complete; Sapwood: incomplete; Number of sapwood rings: 9; Last ring under bark:...物种：栎属（Quercus）植物；年轮总数：40；树龄未测定；髓心：不适用；心材：完整；边材：不完整；边材年轮数：9；树皮下方的末次年轮：……