气干密度

中山杉与落羽杉树干上段（3.3～5.3m）木材的基本密度、气干密度、抗弯强度和抗弯弹性模量均低于下段（1.3～3.3m）；

The basic density , air-dry density , bending strength and modulus of elasticity of the two species of wood from the lower part of trunk are lower .

不同浸渍时间对辐照后杨木气干密度、24h吸水率的影响

Effects of a Different Dipping Time to Air-dry Density and 24-hour Water Absorption by Irradiation MMA into Poplar

该研究利用X射线测定三倍体毛白杨木材各无性系气干密度，通过适当的数学模型，利用计算机可视化技术对木材密度的分布进行可视化分析，得到了木材横切面密度二维分布图。

This study uses X ray to measure wood density of triploid clones of Populus tomentosa Carr . Based on suitable mathematical model , the distribution of wood density was analyzed by cumputer visible technology .

毛竹顺纹抗拉性质的变异及与气干密度的关系

Variation in Tensile Properties and Relationship between Tensile Properties and Air-Dried Density for Moso Bamboo

两类栎木气干密度均属重的一级；

The air dried density of wood of the two groups is all of heavy grade .

两个树种木材的气干密度与木材力学性质均表现为显著的正相关关系。

There is remarkably positive correlation between air-dried density and wood mechanical properties for both species .

对树高、木材气干密度和木材纤维长度虽有一定的影响，但不显著。

But not affect tree height , basic density of wood , and length of wood fibers .

广西阔叶树木材气干密度与其材性相关的研究

Study on the relation between the air seasoning density and the mechanical properties of broad leaved woods in Guangxi

同一无性系林分中，优势木的木材气干密度、抗弯强度、抗弯弹性模量较大，顺纹抗压强度较小。

The wood density , bending strength and bending elastic modulus of dominant tree are higher than mean trees .

对紫杉木材的气干密度、干缩系数、化学成分进行了测定。

It was also measured for the air dry density , coeffecient of shrinkage 、 chemical composition of Japanese Yew .

基本密度、气干密度和全干密度分别降低2.62%、1.75%和1.19%；

The basic density and air drying density and oven dry density of wood of diseased trees decreased 2.62 % and 1.75 % and 1.19 % .

经方差分析对各密度指标的显著性测验，幼龄材和成熟材全干密度、气干密度、基本密度都具极显著差异；而单株间各密度指标稳定一致。

F-test values indicated there were significant differences between the juvenile and mature wood in the all density indices , but there was no obvious differences among the individual tree .

毛竹的气干密度、基本密度、弦向干缩率、顺纹抗拉弹性模量和顺纹抗拉强度从竹青向竹黄方向变异很大，呈逐渐降低的趋势。

The basic properties ( including basic and air-dried density , the shrinkage rate , the tensile strength and the tensile modulus of elasticity parallel to grain ) of Moso bamboo at different locations were studied .

脱脂处理后，马尾松单板气干密度变异系数减小，但气干密度几乎没有变化；吸水厚度膨胀率和吸水率较大；弹性模量剧减，静曲强度变化不大。

After degreasing , gas dry density coefficient variation of Pinus Massoniana veneer decreased , but air dry density value almost had no change ; Thickness swelling rate and water absorption rate were bigger ; MOE decimated , MOR changed rarely .

结果表明，木材气干密度组成及力学性质在无性系间存在显著或极显著差异，并受到中等强度的遗传控制；

The results showed that significant or extremely significant difference in air dried wood density and the mechanical properties existed among the clones , this means these wood properties were under moderate or strong genetic controls and could be improved by genetic manipulations .

该文利用9个9年生三倍体毛白杨无性系木材试样，研究了木材气干密度组成及力学性质的遗传变异规律。

The wood samples of 9 triploid clones of Populus tomentosa Carr . taken from a 9 year old clonal test site were analyzed in order to investigate the genetic variation of wood properties , including air dried wood density and some mechanical properties .

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；而幼龄材全缩率高于成熟材。

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 . The shrinkages of juvenile wood are higher than that of mature wood .