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.
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；
Basic density of Common Jujube and fiber length of English Walnut could be predicted, and the results were significant.
人工经济林枣木基本密度、核桃木材纤维长度可以通过生长轮年龄来预测，且预测效果显著。
But it also requires that the basic colors are certified to specific hue and density standards.
但它也需要基本颜色认证的具体色调和密度标准。
First, the crystallization thermodynamic data and other basic physicochemical data of solution, such as viscosity, density of 7-aca solution and dissociation constants, were measured by experiments.
本文首先实验测定了7 - ACA结晶热力学数据和粘度、密度、电离平衡常数等必要的基本物性数据。
The basic idea of DFT is an ansatz, which assumes that any properties of many-body system can be determined by the ground state density.
密度泛函的基础是一个假定：假定一个多粒子体系的任何性质都是基态电子密度的函数。
In chapter 2, the basic idea and concept of density functional theory is introduced.
接着在第二章中简单的介绍了密度泛函理论的基本思想和理论。
The density current of turbid water is the basic characteristic of the water current in sedimentation tank, in both the high turbid water and the general turbid water.
浑水异重流是沉淀设备中水流的基本特征，不仅存在于高浊度水沉淀池中，也存在于一般浊度水的沉淀设备中。
At prerequisite of rent capitalization and led by demand and scarcity, in this paper, we put forth an available land valuing model. A basic factor of the model is an index of product Value density.
本文以地租资本化为前提，以需求与稀缺性为导向，提出一简易、可行的地价评估模型，其基本要素是国民产值密度指标。
The optimum selection age of basic density was determined at 10 years, the juvenile-mature correlation in tracheid length was unstable.
所以，10龄被确定为基本密度的最佳选择年龄。管胞长度幼——熟龄相关不稳定。
The significant differences also existed in wood basic density, fiber length and fiber diameter at different tree height.
不同树干高度处的平均木材密度、纤维长度和纤维宽度存在显著差异。
The models of traffic density under the conditions of different levels of service are established according to the basic relationship among the velocity, volume and density.
车流密度、行车速度和交通流量是反映交通流特征的三个基本参数，三者关系的确定和模型的建立是交通工程理论研究的基础。
Therefore, we need to understand the basic grading fleet pulp density computational algorithms.
为此，我们有必要了解分级机队矿浆浓度的基本计算法则。
This paper introduces the basic principle and basic composition of on-line measurement system for fine coal ash. The methods are put forward for solving the effect of bulk density on measurement.
本文介绍了精煤灰分在线测量系统的基本原理，提出了解决散密度对测量影响的方法。
Wood basic density and fiber morphological features in the breast-height position for512-year-old excellent clones of Populus tomentosa Carr. (1CK)were measured and analyzed in this paper.
对12年生5个毛白杨优良无性系（另1个作对照）胸高处木材的基本密度和纤维形态进行了测定分析。
The results indicated that the five traits like height, diameter at breast height, volume, wood basic density and tracheid length showed at least significant genetic variation among clones.
结果表明，无性系间树高、胸径、材积、木材基本密度和管胞长度存在显著至极显著差异。
This paper introduces the basic technology of 3d fashioned knitting on flat knitting machine by modifying knitting density and stitch transfering and holding.
介绍了利用改变编织密度、移圈收放针和持圈收放针的方法，在普通横机上编织三维成型织物的基本工艺。
Based on the basic principle of 3-d and colour display, some attempts to the colour display by density separation and three primary colour composition are introduced.
本文根据三维显示和彩色显示的基本原理和特点，介绍了利用密度分割和三基色合成方法进行彩色显示的各种尝试。
Various grades of HDPE 's unique characteristics are the four basic variables of the appropriate combination of: density, molecular weight, molecular weight distribution and additives.
各种等级HDPE的独有特性是四种基本变量的适当结合：密度、分子量、分子量分布和添加剂。
The Fourier analysis method is applied to decompose the air-gap magnetic density into the basic wave and a series of harmonic and wave shape eigen coefficient of air-gap magnetic field are calculated.
采用付立叶谐波分析的方法把气隙磁密分解为空间基波和一系列谐波，进而计算出气隙磁场波形特征系数。
The main properties of the wall brick such as exterior quality, strength character, volume density, the water absorption and dry contractibility satisfied the basic requirements for wall brick.
结果表明：墙体砖中高炉渣掺量可达70%以上，其外观质量、强度性能、体积密度、吸水率和干燥收缩性能等指标均达到或超过砌墙砖的基本要求。
Through testing and analysing their basic properties, the result proves that their thickness, density, strength and elasticity of polyester filament fabrics can accord with the demand of inversion …
结果表明采用聚酯弱捻长丝织制的几种管状织物厚度、密度、强力与弹性达到了翻衬法管道修复技术的工艺要求。
The effect of density of winter wheat basic seedling on grain yield in condition of chemical manipulation was studied with semi-winter variety Jihe 02.
用半冬性品种济核02为供试材料，研究了化学控制条件下小麦基本苗对产量的效应。
Based on the computing of projection density, it separates the terrain and the objects, extracts the feature information, and gains the basic 3d laser model.
改进基于投影密度的计算，进行地形、地物分离，并提取其特征信息，得到基本的三维激光模型。
Also, there existed correlations among various traits, as the wood basic density was negatively correlated with growth traits.
木荷各性状间也存在相关性，其木材基本密度与生长性状呈显著负相关。
Also, there existed correlations among various traits, as the wood basic density was negatively correlated with growth traits.
木荷各性状间也存在相关性，其木材基本密度与生长性状呈显著负相关。
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