Change of the size and the physical - chemical properties of the samples made from eca and three different low ashes raw materials with different mixing ratio have been studied during baking and graphitization , and the influence of the sort of raw material on the properties of the samples obtained has been discussed by the comparison between the physico - chemical properties of the samples 考察了无烟煤和3种少灰料以不同配比混合制成的试样在焙烧和石墨化过程中的尺寸变化及理化性能变化规律，并通过对4种以单一原料制备的试样的理化性能分析，探讨了原料种类对试样性能的影响。
In addition , not all views are self - maintainable . therefore , the practical way is to update the materialized view by maintaining incrementally . incremental materialized view maintenance is to materialize related subset of base relations as the real view and to deal with user queries based on this local data 增量式实化视图维护方法实化基本关系中的相关数据子集成为实际的视图，并且依靠这个本地数据来处理用户查询，当收到数据源产生更新后，对实化视图进行增量式重演算维护，如eca算法、 strobe算法、 olec算法等。
Formalization description of event - condition - action rules and its application are researched to improve the workflow flexibility . workflow key activities and their computation based on the workflow time parameter are discussed to strengthen the workflow response ability . then , different effect of cpd environment to the role based access control is studied to increase the workflow adaptation 在规则控制中，主要研究了eca规则的形式化描述及其在工作流运行控制中的应用；在时间控制中，主要讨论了工作流运行控制的时间参数和其中关键活动计算；在组织控制中，主要研究了协同产品开发环境对基于角色的存取控制技术的影响。
The sort , material composite , structure properties and conduction mechanisms of eca ( electrical conductive adhesive ) were discussed in this paper . then three types of ega specimens were designed and made , on which temperature cycles test from - 55 ? to + 125 ? and thermal aging at + 125 ? were carried out . changes of the adhesive strength , eca ' s bulk resistance and contact resistance under the environment stress were summarized and a detailed evaluation on these specimens was given 本文在全面阐述导电胶的分类组成、物理结构、导电机理的基础上，设计并制作了三批导电胶样品，通过对样品进行长时间的- 55 ? ? + 125温度循环和125高温存储试验，总结了导电胶粘接强度、体电阻和接触电阻在环境应力下的变化规律，对三类样品的长期可靠性做出了全面的评价，并结合导电胶电阻率和“穿流阈值”的计算机模拟，给出了提高导电胶可靠性和电导率的建议，介绍了国内外在高电导率高可靠性导电胶研制方面的一些最新进展。
The graphitized cathode block samples have been trial - produced using high quality eca ( electrically calcined anthracite ) rationed petroleum coke and pitch coke and quantitative pitch used as raw materials by the conventional carbon technics concluding moulding , baking , high pressure impregmating , after - baking and graphitization 摘要选取优质电煅无烟煤，分别配以一定比例的石油焦和沥青焦作为骨料，与煤沥青混合后按照模压成型、焙烧、高压浸渍、二次焙烧和石墨化等常规炭素制品生产工艺流程制备石墨化阴极材料试样。
2 . upon that system structure , the overall model of wfms for implementing in ve is presented . then , the two aspects of organization structure design and business process definition is discussed in details , a scheduling algorithm of wfms engine based on eca rule is presented , and the method of definition and exchange of the process information based bpel4ws between the distributed wfms engines is presented 2 、基于前面所提出的总体框架,给出了工作流管理系统应用于虚拟企业生产计划与调度系统的总体结构模型,详细讨论了组织结构设计、活动与业务过程定义两个方面的内容,提出了一种基于eca规则的工作流引擎调度算法,提出了基于bpel4ws语言对分布式工作流引擎之间需要交换的流程信息进行定义和传递的具体方法。
