表面分形维数,surface fractal dimension
1)surface fractal dimension表面分形维数
1.This paper investigated the effect of gelation speed on thesurface fractal dimensions of silica xerogels derived from TEOS(actone as solvent,catalyzed by HCl, pH≈3), and analyzed the influence caused by calcination.结果表明，胶凝速度对未经煅烧的二氧化硅干凝胶表面分形维数几乎没有影响，但较慢的胶凝速度下制备的二氧化硅干凝胶在600℃煅烧后，其表面分形维数有较大的降低。
2.A simplified procedure is developed to acquire thesurface fractal dimension of porous media utilizing the PSD information from mercury porosimetry or other analyses.对原有的表面分形维数的计算方法进行了简化 ,藉此可以利用压汞或其他分析方法获得的孔分布信息计算出多孔介质的表面分形维数 。
3.The results show that thesurface fractal dimension of the interfacial transition zone in concrete morphology is in the range of 2 to 3,and the correlation coefficients of linear regression analysis are greater than 0.为定量表征不同混凝土界面过渡区的微观形貌,引入表面分形维数参数,并用投影覆盖法实现其求算。
英文短句/例句
1.Research on the Relationship between Fractal Dimensions of Organic Powdery Carrier Surface and Carrying Capacity;有机粉状载体表面分形维数与其承载能力关系研究
2.Study on surface fractal dimensions of several high temperature shift catalysts by N_2 adsorption method用氮气吸附法研究高温变换催化剂表面分形维数
3.The Fractal Dimension of Cylindrical Surfaces for Abrasive Jet Finishing Restricted by Grinding Wheel砂轮约束磨粒喷射精密光整加工外圆表面分形维数的研究
4.Quantitative Characterization for Surface Morphology of Interfacial Transition Zone (ITZ) in Concrete by Fractal Dimension混凝土界面过渡区表面形貌的分形维数表征
5.Study on fractal properties of a river bed and the calculation method of its fractal dimension河床表面分形特征及其分形维数计算方法
6.Arithmetic Research of Fractal Dimension with Image Face Based on Fractional Brownian Motion基于图像表面积的分形布朗运动分数维算法研究
7.Three-dimensional Numerical Analysis of Transient Temperature/pressure/stress Field for Rough Surface Based on Fractal Theory;基于分形理论的粗糙表面三维瞬态温度/压力/应力场数值模拟
8.Connectivity Characterization of Three-dimensional Surface Topography Based on Image Analysis;基于图像分析的三维表面形貌连通性表征
9.Research on Measurement and Parametric Assessment of the 3D Surface Microcosmic Topography;表面三维微观形貌测量及其参数评定的研究
10.3D numerical simulation of free surface flow on tri-prism grids三棱柱形网格下自由表面流的三维数值模拟
11.NUMERICAL SIMULATION OF 3-D INCLINED SEMICIRCLE SURFACE CRACK PROPAGATION三维斜置半圆形表面裂纹扩展数值模拟
12.Research on the Properties of boundary outline of Sand and Crushed Stone by Using Fractal Dimension用分形维数表征砂石的轮廓形状特性的研究
13.Classification of forearm action surface EMG signals based on fractal dimension基于分形维前臂动作表面肌电信号的分类(英文)
14.Simulation Analysis and Experiment Research on Three-dimensional Shape of Turning Part Surface;外圆车削表面三维形貌的仿真分析与实验研究
15.One dimension surface effect mechanism analysis for metal drawing deformation with pulse vibration金属脉冲振动拉拔成形一维表面效应机理分析
16.The Method of Computing Road Roughness Fractal Dimension by Frequency-spectrum Method频谱法计算路面不平度分形维数的方法
17.It is indicated that metal grain can be described quantitative-ly by fractal dimension.结果表明，金属晶粒可用分形维数定量描述。
18.Three-dimension Stratum Layer Visualization Based on Array Linked List Fractal Interpolation基于数组链表分形插值的三维地层可视化
相关短句/例句
surface fractal dimensions D_s表面分形维数(Ds)
3)aggregate surface fractal dimension表面分形维
1.The results showed that geometric mean diameter (GMD) , mean weight diameter (MWD) , diameter distributing fractal dimension (D) andaggregate surface fractal dimension (P) may reflect p.用团聚体几何平均直径(GMD)、平均重量直径(MWD)、粒径分布分形维(D)和表面分形维(P)分别对紫色土团聚体及水稳性团聚体进行分析:几何平均直径(GMD)、平均重量直径(MWD)、粒径分布分形维(D)和表面分形维(P)从不同角度反映紫色土团聚体特征;几何平均直径(GMD)、平均重量直径(MWD)对团聚体和水稳性团聚体分布均能较好地反映;粒径分布分形维(D)和表面分形维(P)能更好地反映团聚体的水稳性和抗蚀性,是描述土壤团聚体水稳性和抗蚀性的新指标和新方法。
4)Surface fractal dimension Ds表面分维数D_s
5)surface fractal dimension表面分维
1.It was also used thesurface fractal dimension model modeled by this paper to calculating 6 kinds of black carbons"surface fractal dimension, and studied the relationship between the particle surface fractal dim.构建了颗粒物表面分维测算模型,研究了颗粒投影轮廓大小与形状指数F的关系。
2.A linearequation reflecting thesurface fractal dimension and internal water and being used to forecast the products on the upside of the screen was establ ished.用压汞法测量了细粒煤炭的表面分维，证实了细粒煤具有分形特征的事实，认为中国大部分矿区的煤其分维值在2~3之间;提出了内在水分和表面分维的线性关系及筛上产物的预测公式，得出了表面分维较大时有利于筛分过程的结论。
6)surface fractal表面分形
1.Based on SAXS theory and fractal theory,surface fractal of pores in the PAN - based carbon fiber and its effects to fiber"s mechanical properties are discussed.基于材料分形理论和小角X射线散射理论,计算给出了炭纤维内微孔缺陷的大小、分布及微孔表面分形维数。
2.While, the microstructure and physical characteristics of the flocs formed in the JMS were studied by utilizing several technologies and apparatus, and thesurface fractal dimensions DS of the flocs were given .同时,采用多种技术和手段研究了JMS中的絮体样品的微观形貌和物理特性,并计算了絮体样品的表面分形维数DS。
3.Basing on SAXS intensity data of the specimen and fractal theory,surface fractal dimension of the pore in PAN-CF was given by small angle X-ray scattering intensity method, and the size of pore was calculated by Fankuchen gradual tangent method.结果给出微孔缺陷大小 (用2a、2c表征)、单位体积内大微孔占总微孔的比例及微孔表面分形维数D均随石墨化温度的升高而增大。
延伸阅读
分形维数分形维数fractaldimension描述分形最主要的参量。简称分维。通常欧几里德几何中，直线或曲线是1维的，平面或球面是2维的，具有长、宽、高的形体是3维的；然而对于分形如海岸线、科赫曲线、射尔宾斯基海绵等的复杂性无法用维数等于1、2、3这样的数值来描述。科赫曲线第一次变换将1英尺的每边换成4个各长4英寸的线段，总长度变为3×4/3＝4英尺；每一次变换使总长度变为乘以4/3，如此无限延续下去，曲线本身将是无限长的。这是一条连续的回线，永远不会自我相交，回线所围的面积是有限的，它小于一个外接圆的面积。因此科赫曲线以它无限长度挤在有限的面积之内，确实是占有空间的，它比1维要多，但不及2维图形，也就是说它的维数在1和2之间，维数是分数。同样，谢尔宾斯基海绵内部全是大大小小的空洞，表面积是无限大，而占有的3维空间是有限的，其维数在2和3之间。计算分形维数的公式是，式中ε是小立方体一边的长度，N（ε）是用此小立方体覆盖被测形体所得的数目，维数公式意味着通过用边长为ε的小立方体覆盖被测形体来确定形体的维数。对于通常的规则物体，覆盖一根单位长度的线段所需的数目要N（ε）＝1/ε2，覆盖一个单位边长的正方形，N(ε)＝（1/ε）2，覆盖单位边长的立方体，N（ε）＝（1/ε）3。从这三个式子可见维数公式也适用于通常的维数含义。利用维数公式可算得科赫曲线的维数d＝1.2618，谢尔宾斯基海绵的维数d＝2.7268。对于无规分形，可用不同的近似方法予以计算，也可用一定的适当方法予以测定。分维反映了复杂形体占有空间的有效性，它是复杂形体不规则性的量度。
