粗糙的

The mutual coherence and angular correlation function of scattered wave from two dimensional rough surfaces is derived with Integral Equation Model and then calculated for perfectly conducting rough surfaces, then the scattering of incident pulse wave with different shape is calculated and the shape of scattered pulse is presented.

采用积分方程法推导出了二维粗糙面的双频互相关和角相关函数，数值计算了具有不同粗糙度的良导体粗糙面的双频互相关函数，在此基础上分别计算了二维粗糙面对δ脉冲、Gaussian脉冲和矩形脉冲的散射，并给出了散射脉冲的波形。

In chapter 2, basic knowledge of the rough set theory, such as indiscernibilityrelation, elementary set, approximate space, upper approximation, lower approximation, negative region, boundary region, rough set, etc., and algebraic properties of rough set are introduced. At the same time, the feature of the rough, set theory is also introduced.

第二章介绍了粗糙集理论基本知识，如不可分辨关系、基本集、近似空间、上近似、下近似、负域、边界域、粗糙集等概念，以及粗糙集的代数性质，同时还介绍了粗糙集理论的特点。

Therefore how to select the minimum character sets in guaranteeing the incurrence of system status approval is important, namely to reduce the character, lower work loading and reduce the uncertain factors in the conditions of guaranteeing diagnostics accuracy. And in fact these are the properly research contents of rough sets.

因此，论文介绍了粗糙集的基本理论，阐明了基于粗糙集观点的知识表达方法，根据水轮机调速系统故障特征的复杂性和不确定性以及粗糙集决策表白动约简、搜索的基本方法，提出了利用粗糙集决策表约简规则进行水轮机调速系统故障诊断决策方法及具体步骤。

Therefore how to select theminimum character sets in guaranteeing the incurrence of system status approval isimportant, namely to reduce the character, lower work loading and reduce the uncertainfactors in the conditions of guaranteeing diagnostics accuracy. And in fact these are theproperly research contents of rough sets.

因此，论文介绍了粗糙集的基本理论，阐明了基于粗糙集观点的知识表达方法，根据水轮机调速系统故障特征的复杂性和不确定性以及粗糙集决策表白动约简、搜索的基本方法，提出了利用粗糙集决策表约简规则进行水轮机调速系统故障诊断决策方法及具体步骤。

The roughen factor of roughened Ni electrode is calculated by compared the differential capacitances of smooth and roughened Ni electrode.

通过测量并比较电化学粗糙前后镍电极表面的微分电容曲线计算出粗糙镍电极的粗糙度，从而进一步计算出该粗糙镍电极的SERS增强因子约有四个数量级； 3。

In this paper,the main work is to extended the premitive model of rough sets;Accorting to the Rough structure and algebra structure,the main work is to study the application of rough set theory on algebra system-group,so that rough algebra system is better perfectly.

本文在现有的Pawlak粗糙集模型基础上，对模型进行推广；根据粗糙结构和代数结构及已有的研究成果的基础上，更进一步地研究了粗糙集理论在代数系统一群上的应用，以此建立较为完善的粗糙代数系统。

The method connects the exponentially attenuating dividable auto-correlation function which is often used in the study of the lubricating behaviors of rough surfaces, to the theoretical model for studying the contact behaviors of rough surfaces and it will be a foundation for studying the lubrication and failure problems of sliding frictional pairs with anisotropic surfaces.

第三章对Onions-Archard的理论接触模型进行扩展，给出了计算各向异性粗糙表面接触性能的简便方法，并将粗糙表面润滑效应研究中常用的表征粗糙表面的指数衰减可分自相关函数和粗糙表面接触性能研究的理论模型联系了起来，为研究混合润滑工况下各向异性粗糙表面摩擦副的润滑和失效问题提供了基础。

The standard workpiece of the ring compression test by Lee and Altan will be used in this report. The specimen will first annealed to eliminate the internal stress and then through different ways of machining to produce different roughness of surface and different direction of machining marks. The ring compression test with various lubricants and dry friction were carried out at room temperature. The experiment results were drawn on the diagram of friction factor developed by Lee and Altan to compare the influence of the roughness of surface to plastic forming with or without lubricants.

实验将依Lee and Altan压环试验所用之标准压环试片进行，实验试片先经退火处理消除内应力，再将试片以各种不同之加工方式制作成具有不同的表面粗糙度，与不同刀痕方向之摩擦面，再於常温环境下实施乾摩擦与添加不同润滑剂之压环试验，将实验结果所得之数据绘制於Lee and Altan之定剪摩擦系数图中，以比较其不同表面粗糙度对塑性成形之影响，同时也说明在各种不同表面粗糙度下添加各种润滑剂对成形之影响。

Basic symbols;Coatings;Definition;Definitions;Dimensions;Drawing specifications;Drawings;Engineering drawings;Finishes;Geometric;Geometrical product specification;GPS;Graphic representation;Graphic symbols;Inscriptions in a drawing;Letterings;Machining;Machining tolerances;Marks;Product specifications;Production processes;Products documentation;Ratings;Reference length;Reference lines;Representation of characters;Roughness;Roughness value;Specification;Statement;Surface properties;Surface roughness;Surface texture;Surface treatment;Surface-roughness measurement;Surfaces;Symbols;Technical drawing;Treatment;Wear-quantity

中文标题产品几何量技术规范。技术产品文件中表面结构的表示方式中文主题词图形表示；参考长度；尺寸；加工公差；表面性质；产品规范；覆层；制图规范；精整；表面粗糙度；粗糙度；表面粗糙度测定；表面结构；磨损量；图纸标题；表面处理；技术制图；几何的；基准线；图形符号；符号；标记；加工工艺；文字书写；产品文件；定义；表面；粗糙度值；工程图；额定值；产品几何量技术规范；GPS；叙述；处理；图纸；机械加工；字符表示；基础符号；规范验收

The main factors affecting the surface roughness of wood are: species, method of machining, radial or tangential section and cell structure of wood surface.

针叶材粗糙度和粗糙感的分布范围较阔叶材的窄，阔叶材的粗糙感主要受粗糙度的影响，针叶材的粗糙感主要来源于木材的年轮宽度。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。