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Li Zimu,Xu Ming and Zhou Xingming（School of Computer Science,National University of Def ense Technology）Abstract: In this paper,we propose a new vers ion-control set refreshing algorithm,which adopts the mechanisms of incre mental maintenance,version control and batch processing to ensure on-line maint e nance and consistency.

本文提出了一种版本控制集合刷新算法VSRA，它采用增量维护和批处理思想，首先根据原始数据的变化集合，计算出实体化视图的刷新集合，然后据此集合刷新实体化视图，同时利用版本控制保持数据仓库与当前数据库状态的一致性，达到对数据仓库联机维护的目的。

This criterion is relatively intuitionistic and accurate, which adopts direct measurement of generators power angle δ. The possibility of maloperation is less.

这种静稳判据，采用直接测量发电机功角δ的方法，比较直观、准确，误动的可能性小。

Barley beer syrup is mellower since it adopts the best barley and hop with thick malty.

采用了最好的夏季大麦和秋季啤酒花，麦芽味较浓重。

The problems include mixed pixel, shadow, metameric substance of same spectrum, metameric spectrum of same substance, and special stony land. According to the classification standard of National Environmental Protection Bureau in 2000 and actual situation in Huajiang karst gorge, the author adopts the technique wh...

根据国家环保局2000年分类标准，结合花江喀斯特峡谷的实际情况，本文采用了RS、GIS和传统勾绘技术相结合的方法进行土地利用类型划分，分类结果表明此方法是可行的，其精度可达89.65%。

The author adopts the basic theory on agency,intermediariship and middlemanship incivil law,indicates that even the security law sets forth that the relationship betweeninvestors and security dealers can be categorized as agency,but in nature,it should bemiddlemanship.

作者运用民法关于代理、居间和行纪的基本理论，指出我国有关证券法规虽然将投资者与证券商之间的关系界定为代理，但从这两者关系的本质来看，应为行纪。

In this new technology,on the basis of substituting flotation froth of high intensity scavenger concentrate for high intensity middlings,the desired RE concentrate can be obtained easily,which does not take any special measures of removing surplus reagents and adopts the current technological process taken by workshop of RE ore dressing,and the cost of flotation reagents per ton RE concentrate can also be reduced about 50%.

将生产中所用的稀土浮选原料强磁中矿更换为强磁扫选精矿的反浮泡沫，不需特别的脱药措施，只采用稀选车间现有的工艺流程和浮选药剂组合方案，即可获得所需的稀土精矿，使每吨稀土精矿的成本降低一半左右。

The engine main circuit have to be gurranteed drawing the torque of electric motor and rotation speed wholly to do regulateing of independence ,But also possess extensive setting range SS7's mould electric locomotive adopts Quan Kongqiao and semi bridge accuseeing series connection to make up the monophase bridge style commutation electric circuit ,The coil power supply is encouraged against the stringtrain by the electric motor the drawing armature to 3 parallels operation ,Still there is an excitation commutation bridge ,He encourages the coil power supply with 3 electric motors drawing together to the series connection ,Moreover has one another accuses the regulating action .

机车主电路必须保证牵引电动机的转矩和转速都可作独立的调节，而且要有宽广的调节范围。SS7型电力机车采用一个全控桥和一个半控桥串联组成单相桥式整流电路，向3台并联工作的牵引电动机电枢与串励绕组供电，还有一个励磁整流桥，向串联在一起的3台牵引电动机他励绕组供电，并具有相控调节作用。可以实现机车无级调速和无级削磁。SS7型电力机车采用再生制动方式，再生制动时，牵引电动机作直流发电机工作，并且将电能馈送回接触网，此时电力机车相当于一个移动的发电站。

Objective Based on data of medical examination in continuous 11 years,investigates morbility rule of 5 diseases.Methods Adopts census method.

目的 依据历年干部体检数据，探讨高血压病、冠心病、高脂血症、脑血管病及糖尿病5种疾病发病规律。

Test evaluation method of threshold stress of environmental cracking usually adopts NACE method A, refers to the NACE Standard Tensile Test. This test and its relevant data handling are introduced in this paper.

环境断裂临界应力的试验评价方法通常采用NACE方法A即NACE标准恒载荷延伸试验方法，对该方法及相关的数据处理作了介绍。

The constitution of surveillance nocuous air system adopts gas sense organ QM-N5 and SCM AT89C2051 is introduced, and the design proposal based on it is described, along with buildup of sense organ circuit and operation principle.

采用气体敏感元件QM—N5与单片机AT89C2051构成有害气体监测系统，介绍了系统设计方案以及传感器电路组成与工作原理，设计了系统软件。

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。