| 1. | Percolation model of the temperature dependence of exotic magnetic field in doped manganese perovskites 掺锰钙钛矿系统中外磁场与转换温度的关系 |
| 2. | Some researches have been done as follows : 1 . in the study of percolation model , a coefficient , which is used to describe " conduction " rule , is defined 重整化群方法处理渗流模型时, “导通”规则的选取至关重要,我们定义一个描述“导通”规则的系数(简称规则系数) 。 |
| 3. | Abstract : a percolation model of radial flow with which the process of sand production in horizontal well can be simulated and a method by which a series of tests can be carried out are introduced in this paper 文摘:介绍了一种模拟水平井出砂的径向流试验模型和在该模型上进行的地层出砂试验的方法。 |
| 4. | Utilizing the three - dimension self - similar percolation model , the paper probed into the renormalization group method of grid of non - uniform granular mixtures , and the relationship between stabilization and non - uniform degree was discussed 借用三维自相似渗流模型重正化群方法,讨论了散粒体稳定性与颗粒非均匀程度的关系。 |
| 5. | For the first time , the oriented percolation model is applied to analyzed the critical particle concentration of 0 . 37 and which is characterized an electrorheological fluid and independent to the external electric field 同时得出,分形维数( d _ f )与外加电场性质无关,但随微粒的体积百分数增加而趋近于dla生长模式的特征值1 . 8 。 |
| 6. | The real - space renormalization group approach is close to fractal and is widely used in geometric phase transition systems without hamilton , for example , percolation model , rock fracture model , flit ant model 实空间重整化群方法与分形有密切的关系,在不具有哈密顿的几何相变系统,如渗流,岩裂,自回避无规行走等模型广泛地被应用。 |
| 7. | ( 3 ) based on the research on rational ratio of conductive percolation model and making of the electrically conductive concrete , small plates and a large slab having good properties are made successfully ( 3 )通过采用合理的导电渗流模型的级配,详细研究了融雪化冰用碳纤维导电混凝土小板和大板的制作原理和方法,成功研制出了性能优良、价格适中的导电混凝土大板。 |
| 8. | For ld - ( zd , ed ) : assign to each edge of ed an independent . non - negative random variable u ( e ) ( which we think of as being the time required for fluid to flow along e ) with distribution function f . this is our first - passage percolation model 对图l ‘ ( z e勺,如果e ‘中每一条边e都有一个取值为非负的,分布为厂的随机变量叫。 )与之对应( 。何表示液体通过边e所需要的时间) ,且。 |
| 9. | In bernoulli bond percolation model with parameter p in i , 2 , we call a path open if all of its edges are open and closed if all of its edges are closed , we shall write u - v if there is an open path joining vertex u to vertex v . we write c ( x ) for the open cluster containing vertex x , defined by c ( x ) = { y : x - y 在图l ~ 2上参数为p的贝努利边渗流模型中,如果一条路中的所有边均为开边,称这条路为开路;如果一条路上的所有边均为闭边,称这条路为闭路。用u v表示从点u到点v有开路存在 |
| 10. | The fractal is a geometrical figure with self - similar symmetry , and it is an important tool for characterizing irregular structures in nature that are self - similar on certain length scales . for example , the koch curves can be viewed as a mathematical model for coastlines , percolation model can be used to mimic mixture of mental and insulator , self - avoiding walks can serve as a model for linear polymers , and rock fracture mode can stimulate the process of brittle fracture of rock , and so on 分形是具有自相似对称性的几何图形,可用来模拟自然界中在一定尺度范围内具有自相似对称性的不规则结构,如koch曲线可用来模拟海岸线,渗流模型可模拟金属绝缘体混合物,自回避无规行走模型可模拟线性聚合物,岩裂模型可模拟真实岩体的脆性破裂等。 |