When ph value < 0 . 5 , faster deposition rate , faster growth rate of crystallizing nucleus , which causes bigger crystalline granularity and bad surface quality of the deposits such as crassitude or darkling Ph 0 . 5时，沉积速度过快，晶核成长速度快，晶粒粒度较大，镀层表面粗糙、发黑，表面质量差。
2.
An isolated point " s statistic excluding method is proposed in this paper to eliminate crassitude error in clouding data , which include plenty of oddity data . the method based on the distance between two neighbour points can eliminate the data beyond normal distribution . a error limitation of angle and chordal highness method is used to filtrate clouding point 针对大量含奇异点的数据点云，本文提出了剔除粗大误差的孤立点统计排异法，该方法根据对相邻点距离的统计，剔除在正态分布以外的点；对大量数据的精减，利用角度和弦高的最大允许偏差法进行点云精减。
3.
This paper sets up the business mode system which is dominant by bpr in terms of the methodology of object - oriented , and this business mode system is composted by several granularity level model from crassitude to fine , and is described by the unified modeling language ( uml ) . bi the aspect of drcmis developing process methodology , both the conception of domain - specific software architecture ( dss a ) and component technology are play important role leave each other from macrocosm to microcosm angle of view 该模型体系的建立具有以下基本特征：以适应bpr为主导，以面向对象的分析与设计为基本建模方法，以uml为模型描述语言，以特定领域软件体系结构( dssa )概念为整体开发方法，以组件为“应用工程”开发过程中应用域的主要划分单位，以corba作为分布对象的集成标准。
