In physical and mechanical indexes, the basic density, air-dried density, compression strength parallel to grain, MOR, MOE and toughness of mature wood are higher than that of juvenile wood.

在物理力学性质指标中成熟材的基本密度、气干密度、顺纹抗压强度、抗弯强度、抗弯弹性模量及冲击韧性高于幼龄材；

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There was a remarkable positive correlation between mechanical properties and air-dried density for two wood species.

两种木材的力学性质与气干密度表现为显著的正相关关系。

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