论文部分内容阅读
木材是一种天然的有机体,它具有特殊的使用性能。这些特殊的性能除与树木生长条件有密切的关系外,在生产实践及日常应用中,尚与木材的纹理方向有着密切的关系。在使用木材时,由于使用部位的纹理方向微小差异,往往表现出明显的力学强度、变形、干缩湿胀及对热、电、声的传导性等诸多因素的差异。因此,深入细致地研究木材的不同纹理方向,对力学强度的影响,提出不同使用目的,选用不同树种,特别是注意作用力与不同纹理方向的关系,对提高木材使用价值,发挥木材本身的
Wood is a natural organism, it has a special use of performance. In addition to these special properties and tree growth conditions are closely related to the production practices and daily applications, but also with the wood texture has a close relationship. In the use of wood, due to the use of small differences in the direction of the texture of the site, often showing significant mechanical strength, deformation, shrinkage and swelling and heat, electricity, acoustic conductivity and many other differences. Therefore, in-depth and detailed study of different wood grain direction, the impact on the mechanical strength, put forward different purposes, choose different tree species, especially pay attention to the relationship between force and different texture directions, to improve the use value of wood, play the wood itself