通过不同林龄木材物理性能和纤维形态、化学分析及纸浆造纸性能确定工艺成熟龄。
The technical maturity of the plantation was determined according to physical property of wood, fibre form, chemical components, and pulp characters.
应用类比推理的物理学方法，从材料的导热与导电的相似性，推导出木材弦向导热系数的理论计算公式。
Theoretical formula of wood thermal conductivity in tangential direction was derived by analogy from the fact that heat conduction of the material was similar to its electric conduction.
其性能特点完全可以和红木(花梨木)、榉木、柚木等高档木材的物理性能媲美。
The performance characteristics can completely and annatto (red wood, teak, etc), ju high-grade timber physical performance comparable.
木材变成桌子是物理变化还是化学变化？
Is this a chemical change or a physical change when wood becomes desks?
结果表明：木材物理性质一般受试样尺寸的影响较小；木材力学性质则不同程度地受到其影响。
The result shows that sample dimension has light influence on wood physical properties, but different degrees of influence on wood mechanic properties.
在木材物理力学性质试验的基础上，研究了文县杨木材的9种常规物理力学性质，并对其材性指标进行了评价。
Based on the timber experiment of Wenxian Poplar, the paper researched its 9 kinds of common physic mechanics characters and evaluated its timber character index.
研究表明：桉树不同家系间木材物理力学性质和化学组成存在差异；
The results showed that there existed variation among eucalypt families in wood physical-mechanical properties and wood chemistry.
对比分析可知其木材物理力学性质与杨属类其它种木材相近，并指出其木材利用的主要方向。
The contrast analysis shows that, the timber physic mechanics character is similar with the other species of Populus. The main orientation of timber utilization is pointed out.
本文阐述了零距拉伸的原理和应用，着重介绍了零距拉伸在木材纤维强度评价， 物理化学处理对微尺度木材强度的影响，和在古建筑强度评价中的应用前景。
The basic concepts and principles, especially prospects in wood fiber mechanical properties, differential treatment on microsamples and ancient timber structures, have been introduced in this paper.
本文通过研究红木8类19个树种的木材材色、光泽度、粗糙度参数，分析了红木类木材视觉物理量的分布特征；
This paper analyzed the wood surface color, luster and roughness of 19 different species of HONGMU in 8 groups.
木材作为高分子、各向异性材料，其弹性模量是表示木材和木质材料抵抗变形能力的一个重要物理量。
Wood as a polymer, anisotropic materials, the wood elastic modulus is an important physical quantity for wood or wood-based materials resist deformation ability.
木材作为高分子、各向异性材料，其弹性模量是表示木材和木质材料抵抗变形能力的一个重要物理量。
Wood as a polymer, anisotropic materials, the wood elastic modulus is an important physical quantity for wood or wood-based materials resist deformation ability.
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