针叶材

针叶材制浆性能影响因素的回归分析

Regression analysis of the factors which affect softwood Pulping Property

以计算机数字图像处理技术为平台，基本实现了对针叶材微观结构特征参数的自定义提取。

Set computer image processing technology as the platform , basically the structure of softwood micro extraction of characteristic parameters of the custom .

桉树和澳洲金合欢（acacias）的木材和树皮，性质上互有差异，也不同于北半球常见的针叶材。

The properties of the woods and barks of Eucalyptus and Australian acacias differ between themselves and from the softwoods common in the northern hemisphere .

生长非常慢的针叶材有着特别好的加工性能。

Very slow-grown softwoods have excellent workability .

针叶材管胞径壁与弦壁纤丝角的差异分析

Analysis of difference between fibril angles of radial and tangential walls of coniferous wood tracheids

针叶材微观构造数字图像处理及虚拟构造模型的研究GB/T153-1995针叶树锯材

The Research of Coniferous Timber Structure Analysis and Virtual Structure Modeling Based on Digital Image Processing

结果表明：该胶用于针叶材云杉和阔叶材水曲柳、榆木、柞木，所制得集成材的粘接性能达到结构用集成材的指标要求，为生产结构集成材提供技术依据。

The results of the experiment indicated that the bond properties can fulfill quality requirements for structural glued laminated timber .

本文针对针叶材蒸煮黑液中木素的提取，及其用于活性炭的制备进行了研究，并对实验所得活性炭的性能进行了分析。

This paper studied on extracting lignin from conifer black liquor , the producing active carbon , and analyzed the properties of the active carbon .

相同条件下，针叶材自由基浓度大于阔叶材，这是由于前者木素成分大于后者的缘故。

Under the same conditions , free radical concentration is more in soft wood than in hard wood due to the higher lignin content in the former .

本文选用常用的合金钢和高速钢制成的木工刀具，并选用具有代表性的针叶材云杉、阔叶材山毛榉、刨花板和中密度纤维板等木材与木质材料作为试验材料。

The testing tools are made from hart metal and high-speed steel , work piece materials are the boards of spruce and beech , particle board and MDF .

并将数字图像处理技术与面向对象编程技术相结合对针叶材微观结构的模拟进行了研究，初步提出了针叶材构造模型的构建思想并对实体木材进行了简单的建模。

And digital image processing technology and the combination of object-oriented programming techniques on the microstructure of softwood virtualization studied , initially proposed structural model of softwood construction and physical ideas were simply the virtual timber processing .

针叶材低渗透树种比阔叶材多，与纵向单位长度上阻碍流动细胞间隔数在前者比后者多有关；

The species of low permeability in softwoods were more than that in hardwoods because the numbers of cell cross per unit length in axial direction which hinder flow of fluid in the former were more than that in the latter .

通过分析薪材、工业原木、针叶材、人造板、木纸浆、其他纤维纸浆、再生纸和纸和纸板生产世界前5强，评价中国的生产地位。

The production positions of China were evaluated according to analysis wood fuel , industrial round wood , sawn wood , wood-based panels , wood pulp , other fibre pulp , recovered paper and paper and paperboard in the highest production 5 nations of the word .