搜索结果: 1-1 共查到“知识库 longitudinal change”相关记录1条 . 查询时间(0.046 秒)
Longitudinal Change of Dynamic Modulus of Elasticity and Quality Evaluation by a Non-destructive Method in Todomatsu(Abies sachalinensis)Plus Trees
todomatsu stress wave velocity standing tree dynamic modulus of elasticity
font style='font-size:12px;'>
2009/3/6
Longitudinal changes of dynamic modulus of elasticity values (Efr) of logs for todomatsu (Abies sachalinensis) were investigated to clarify the best vertical region of the stem (height from ground lev...