木材

In the field of wood dyeing, using computer for measuring and matching color instead of handiwork not only heightening the product efficiency but also contenting people with the color requirement .

应用计算机在木材染色中进行测色和配色代替以往的手工配色，不但提高了木材染色的生产效率，而且能够更好地满足人们对染色木材的颜色要求。

This paper is reported some research results about the ethylated modification of wood, the resolution ofthe ethylated wood in some solvents, and the preparation and application of ethylated wood epoxy resin adhesives.

报道了木材乙基化改性、乙基化木材的溶解、乙基化木材－双酚A型环氧树脂的制备及其应用的某些研究结果。

As one of the most important lumber grading systems in North America, machine grading does non-destructive test by stress rated machines, and then classify the lumbers into different grades according to their bending strength and the modulus of elasticity.

规格材的机械分等方法是北美一种很重要的分等体系，即采用机械应力测定设备对木材进行非破坏性试验，按测定的木材弯曲强度和弹性模量确定木材的材质等级。

The papers are carefully selected by an editorial board to cover all aspects of Biology of Tree and Related Microorganisms, Wood Anatomy and Structure, Wood Physics and Chemistry, Timber Engineering, and Environmental Material Science.

这些杂志均刊登在该领域内的基础研究和应用研究的成果，内容涉及树木和相关微生物生物学、木材解剖学和结构、木材物理学和木材化学、木料工程学以及环境材料科学等。

The analysis of these wood sawing technologies are made and the conclusion is that the whole technical performance of zero degree side clearance angle woodworking saw s is better and can realize high quality,high efficient and high profit cutting of wood.

简述木材锯切技术所经历的手工期、简单机械期、近代期和现代期及其特点，对各种木材锯切技术进行了分析，结论是零锯料角木工锯子技术整体性能较好，可以实现高质量、高效率、高效益锯切木材。

In first, a new short time formula of one dimension heat conduction differential equation, based on the theory of one dimension transient method, is presented for thermophysical property measurement of wood. The result of testing on red pine and larch wood arc satisfied by new method.In succession, the relationship between heat conductivity of wood and moisture, density, porosity, temperature and grain is studied experimentally in the range from 25 to 100℃. The result shows that, the heat conductivity is in direct proportion to density. but in inverse proportion to porosity. The heat conductivity of air-dried wood increased probably linear with the temperature rising. And that heat conductivity along the grain of wood is higher than that cross the grain. The former is 1.8 or 2 times of the latter.

文中研究了25～100℃范围内，气干木材的导热系数与含水率、密度、孔隙率、温度及热流方向的关系，研究表明：木材导热系数与密度成正比关系，与孔隙率成反比关系：对于针叶材，导热系数与密度及孔隙率成线性变化关系，而对于阔叶材其变化关系近似成二次曲线；气干木材的导热系数随着温度的升高近似呈线性增加：热流平行于纹理方向的导热系数大于垂直于纹理方向的导热系数，两者的比值大约在1.8～2之间。

Stress relaxation of delignified and hemicellulose-removed wood was determined during periodic temperature change, and found that after 4-hour relaxation at 25℃ the stress curves hardly level off, at this time when increase temperature the stress immediately sharply fall and whereafter the decrease of temperature make stress rapidly recover again.

通过木材在温度周期变化过程中的应力松弛研究，发现，未处理木材和化学处理木材在25℃松弛4小时后，应力几乎水平下来，升温后，应力立即急剧下降，温度下降时，应力又急剧回复。

During the process of raising temperature from 20℃ to 100℃, the stress of untreated and treated oven-dry wood decrease rapidly and linearly, but the relaxation rate of untreated wood is a little greater than treated wood.

温度从20－100℃的上升过程中，未处理和非晶化处理绝干木材的应力都呈快速直线下降，未处理木材比两种处理木材的应力松弛稍大。

Theory structure is presented in this paper about press plate wood vacuum dryer, and model of theoretical preheating time is built related to wood vacuum drying technology.

本文对压板式木材真空干燥机进行了结构介绍，以模型的形式确立了木材真空干燥工艺的理论预热时间，并以ZKY-01型箱式木材真空干燥机为试验仪器，采用波动压力方法对柞木和柯木进行真空干燥工艺试验。

Main production : 800 - 950 slices of wood-disc, 400 - 500 of the timber mill, wood peeling machine, Advanced Micro Devices mill, the series of woodworking saw more than 20 kinds of products.

主要生产有：800 - 950型盘式木材切片机，400- 500型木材粉碎机，木材剥皮机，超微粉碎机，系列型木工锯20余种产品。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。