粗糙

It was also observed that the rougher asperities damaged gradually by shearing and wearing in small region and the surface in contact increases with the increasing of normal stress and shear displacement.

因此，对任一条不规则的节理粗糙线，可以通过非平稳部分的正倾角或负倾角和平稳部分的平均粗糙角的结合来定量描述其表面粗糙度。

The application of rough set theory in incomplete information systems is one of the key problems to study rough set theory in practice. However, it is difficult for classical rough set theory to deal with those incomplete information systems.

粗糙集理论在不完备信息系统中的应用，是将粗糙集理论进一步推向实用的关键之一，而经典的粗糙集理论对不完备信息系统的处理显得束手无策。

Main topics of this dissertation are as follows:(1) In this paper, we re-interpreted the basic concept of classical rough set theory based on VPRS, we also analyse the features and process of the application of rough set theory in data mining and pointed out the direction of the research.

本文的主要工作包括：(1)在可变精度粗糙集理论下对经典粗糙集的概念进行了重新的诠释；分析了粗糙集理论在数据挖掘应用中的理论根据和基本原理，并点出了研究的方向。

Experiments show that the improve coarseness has higher texture discriminability and better rotation invariance, and that the image retrieval result based on the improved coarseness is superior to that based on the previous coarseness.

实验表明，改进纹理粗糙度具有更强的纹理分辨能力和更好的旋转不变性，基于改进纹理粗糙度的图像检索结果优于基于原有纹理粗糙度的图像检索结果。

Moreover, it is based on an equivalence relation.

在给出一系列定义后，该文讨论了基于优势关系的模糊粗糙集的若干性质，提出基于优势关系的模糊粗糙集的上、下逼近的概念，建立基于优势关系的模糊粗糙集模型。

It was applied to model and predict the variables of the mycetozoan fed-batch process. The result has shown that the structure of this kind of neural network model is simple, explicable and the convergent speed is much quicker.

为此，结合模糊粗糙集和智能控制的理论，充分利用模糊粗糙集和神经网络两者的优点，提出了一种新型的网络—模糊粗糙神经网络实现对发酵过程的建模和状态估计。

This paper deals with the necessity for carrying out the measurement of the gear tooth face roughness, introduces the present ways of checking and measuring, and also lays emphasis on recommending principles, ways of operating and measured results of a newly-set instrument used in our university.

本文阐述了广泛开展齿轮齿面粗糙度测量的必要性，以及目前对齿面粗糙度的检查和测量方法，重点介绍我校使用的测量齿面粗糙度的"新装置"的测量原理、测量方法及测量结果分析。

This paper presents a novel rough set model based on concordance relation, according to which the objects are less indiscernible and tolerant on the basis of classical and torlerant rough sets.

在传统的粗糙集模型和相容粗糙集模型基础上，通过松弛对象之间的不可分辨和相容性条件，给出了一种新的基于和谐关系的粗糙集模型。

And several rough set operation algorithms are also offered in this paper,such as upper approximation set,lower approximation set,intersection, cardinal number and so on.

通过讨论二进制与粗糙集之间的内在联系，提出基于二进制的粗糙集运算理论，并借助二进制的位运算操作，给出粗糙集的上近似集和下近似集、等价类的交、集合的基数的运算算法。

The analysis indicates that the mean intensity distribution on the receiver plane is closely related to the ratio of the lateral correlation length to the surface root mean square height.

研究了粗糙目标对相干光场的散射，导出了在接收平面上光场的自相关函数、光强度的分布和光强度的二阶矩，在分析粗糙目标对激光脉冲后向散射的基础上，提出了后向散射光强度与目标均方根高度和相关长度的关系，阐明了粗糙目标的后向散射机理。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。