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；
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.
顺纹抗拉强度主要受管胞长度、管胞强度、纤丝角度、结晶度等因子的控制。
Tensile strength is mainly controlled by tracheid length, tracheid strength, microfibril angle and crystalline degree etc.
材料和工艺相同时，顺纹组坯时的胶合强度高于垂直纹理组坯时的胶合强度。
With same material and technics, bond strength of parallel lay-up is higher than upright lay-up.
实验结果表明，黄竹的物理性能，如纵横干缩性等优于龙竹，而且黄竹的力学性能如静曲强度、静曲弹性模量及顺纹压缩与剪切强度也比龙竹高。
The results showed that Den. membranaceus has better physical properties than that of Den. yunnanicus, such as higher density, lower tangential and longitudinal dry shrinkage.
对不同厚度及缺角的速生材试样，进行了顺纹抗剪强度的测定。
The objective was to examine the effect of sample thickness and cutting angle on the shear stre…
对不同厚度及缺角的速生材试样，进行了顺纹抗剪强度的测定。
The objective was to examine the effect of sample thickness and cutting angle on the shear stre…
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