查询词典 fractal dimension

Fractal dimension is an effective parameter describing the structure of the urban system.

分形维数是刻画城镇体系结构的有效参数。

Fractal dimension of soil,the proportion of which was 8.8%,had important effects on soil status.

土壤的分形维数也对土壤性质有重要作用，贡献率为8.8%。

Haeckel, is a type of inertial movement characterized by fractal dimension.

Haeckel 的重演律，就是以分形维为特征的惯性运动。

The results show that the reservoir's inhomogeneity is stronger, the well-logging's fractal dimension is higher.

研究结果表明，储层的非均质性越强，测井曲线的分维数越大。

The results showed that the rural residential land become fragmentized during the years 1995-2010. The indices of number of patches, area-weighted mean shape, mean fractal dimension of landscape structure in Suining county gradually increased. Interspersion and Juxtaposition index and Shannon's diversity index were decreased.

结果表明：1995~2010年徐州市睢宁县的农村居民点景观格局呈破碎化趋势，土地利用斑块数增加，斑块平均面积下降，面积加权平均形状指数上升，平均分维度小幅上升，散布与并列指数和香农多样性指数均在下降。

D based on the charac teristics of lacunarity data ,we also give two effective methods to classify. we develop the method of fractal dimension image tcxture classification.

针对空隙数据自身的特点，提出了分别利用拟合回归方法和模糊聚类分析方法进行分类的思想，从而进一步完善了影像纹理分类中的分形维方法。

On the basis of making it clear that laterization includes such three integrated stages as weathering, micro-granularity and soil formation of laterite, the thesis illuminates characteristics of Kunming laterite in chemical composition, physical mechanics, composition of granules, fractal dimension of granularity and the connection of granules. The experiment using soil reinforced agent to solidify the laterite shows that the mechanical traits of laterite have been improved because of its involvement, the best compact indicators and shear strength ones increased and the indicators of laterites penetrability and compression decreased. The effects of reinforcement can be weighed through its coefficient and the mechanism of reinforcement can find the explanation in the effect of soil reinforced agent on the laterite granules, the changes in the electric double layer caused by soil reinforced agent and its enwrapping of laterite granules.

在明确红土化作用包括风化作用、微团粒化作用以及红土成土作用三个完整阶段的基础上，阐明了昆明红土的化学组成特征、物理力学特征、颗粒组成特征、颗粒粒度分维特征以及颗粒连接特征；土壤强固剂加固红土试验表明，土壤强固剂的加入，改善了红土的力学特性，提高了红土的最佳击实指标和抗剪强度指标，减小了红土的渗透性指标和压缩性指标，其加固效果用加固效果系数来衡量，其加固机理可用土壤强固剂与红土颗粒之间的物理化学作用、土壤强固剂引起红土双电层的变化以及土壤强固剂对红土颗粒的包裹作用来解释。

For the one-dimensional case, the relation of the length of the element content distribution curve L to the sampling interval r is L =Cr1-1/H with the fractal dimension D=1/H.

对于地壳上任一给定区域，沿某一测线进行地球化学测量的任一元素含量数据，由上式确定的D值和H值，对于沿测线方向该元素的含量分布在统计的意义上将是确定的。

Each data line must consist of the coordinates of a single point in the set whose fractal dimension is to be estimated Successive coordinates must be separated by one or more spaces.

每个数据行必须包括单个点的所有坐标，这个点是被测分形维数集合中的点。连续的坐标必须由一个或更多的空格分开。

A good linear relationship meet between fractal dimension and specific surface area of slag powder,and positive correlation with the cementitious properties of steel slag-based cement material.

分形维数与钢渣微粉的比表面积间满足良好的线性关系，并与钢渣基水泥材料的胶凝性能良性相关。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。