共查询到20条相似文献，搜索用时 46 毫秒
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本简要介绍了数字化图形图像件的存储结构，性能指标参数和内部处理模块，并简单分析了目前微机上常用的几种图像件的技术特点。 相似文献
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王艳 《武汉工程职业技术学院学报》2010,22(3):38-41
基于AutoCAD的参数化绘图系统是一个计算机辅助设计内容,在机械类专业的高职毕业设计中具有实际意义。通过工程图幅的自动生成教学实例,告诉学生一种实际工作方法,即对实际工作中结构和尺寸均已标准化的标准件或常用件,开发建立它们的参数化绘图系统,可以极大地提高设计和制造的工作效率。 相似文献
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本文针对目前实用型积件系统缺乏的现状,分析了较为常用的PowerPoint和Authorware积件系统的优势和不足,提出了实用型积件系统的组成结构;结合作者的实践经验提出了基于Flash演示文稿的实用型积件系统模型,分析了Flash积件系统的特性,重点探讨了Flash积件的可积性和教学呈现两个主要实现环节。最后,通过与常用积件系统在积件性能上的比较说明了Flash积件系统的优越性。 相似文献
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介绍了纺机常用件设计系统的设计思想和总体框架．针对常用件设计知识的特点，提出了把隐性知识固化于零件模板和把显性知识融入到设计资源库，并利用树形结构来组织管理的处理方法．研究了知识管理子系统的信息模型和知识树类的封装．最后给出了运行实例，表明系统实现了设计知识的提取，存储，繁衍，继承和重用，大大降低了常用件设计工作的重复劳动，提高了零件设计速度和设计准确性． 相似文献
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介绍了纺机常用件设计系统的设计思想和总体框架.针对常用件设计知识的特点,提出了把隐性知识固化于零件模板和把显性知识融入到设计资源库,并利用树形结构来组织管理的处理方法.研究了知识管理子系统的信息模型和知识树类的封装.最后给出了运行实例,表明系统实现了设计知识的提取,存储,繁衍,继承和重用,大大降低了常用件设计工作的重复劳动,提高了零件设计速度和设计准确性. 相似文献
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申永胜 《现代远程教育研究》1996,(5)
第四章凸轮机构的分析和设计1 教学重点和难点从动件常用运动规律的特点及其适用场合。从动件常用运动规律的特点和适用场合是本卓的重点之一,教材中主要介绍了四种常用运动规律,对这些运动规律的具体公式推导不作要求,但要熟练掌握每种运动规律的特点和适用场合。这部分内容虽是重点,但不 相似文献
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第四章 凸轮机构的分析和设计 1 教学重点和难点 从动件常用运动规律的特点及其适用场合。从动件常用运动规律的特点和适用场合是本章的重点之一,教材中主要介绍了四种常用运动规律,对这些运动规律的具体公式推导不作要求,但要熟练掌握每种运动规律的特点和适用场合。这部分内容虽是重点,但不是难点。 相似文献
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臧昭影 《第二课堂(小学)》2002,(11)
插叙是写作记叙文常用的一种方法,它是在叙述中心事件的过程中,根据需要,暂时中断叙述的线索,插入一段与文章主干密切相关的另外一件事。这件事有时是一件有头有尾的事,有时则是一个片断。在初中语文记叙性课文中,有许多篇 相似文献
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基于小波分析算法的应用程序设计与实现 总被引：1，自引：0，他引：1
首先简述了面向对象程序设计的基本思想；然后利用面向对象程序设计的思想，设计了一个实现小波分析理论中的常用算法的应用钦件。实例表明，该钦件具有很好的应用效果，同时具有较好的通用性和扩展性。 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
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RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 相似文献
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Rajesh Kanoi 《海外英语》2007,(1):52
Today, Sunday morning, I sit thinking and typing at my computer. My thoughts are in my homeland, India and my body is in China. The body is here and mind there for a good reason. Mr. Hu is president and I am resident and both are in each other's countries (what a difference the absence of one small letter makes!). Mr. Hu will return in a few days and I will stay on longer. 相似文献
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正A One day a pig went to the stable(马棚)to see his good friend,an oldhorse,and was going to stay there forthenight.Night came and it was time forsleep.The pig went into the straw heap(稻草堆)and lay comfortably.A longtime passed,but the horse was stillstanding there and did not move.Thepig asked the horse why he did not go tosleep."Standing like this is the begin-ning ofsleeping,"answered the horse. 相似文献
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《今日中学生》2014,(9)
正1.Any fool can count the seeds in an apple.Only God can count all the apples in one seed.2.Happy families are all alike;every unhappy family is unhappy in its own way.3.Memories are the key not to the past,but to the future.4.Sometimes in the dark you see what you want to see.5.There is a great difference between 相似文献
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《重庆大学学报(英文版)》2014,(2)
正Scope and Policy The Journal of Chongqing University-English Edition(JCQU-E)is a peerreviewed journal publishing research articles in multiple disciplines of science and technology,covering civil and environmental engineering,chemical engineering,biotechnology,mechanical and electrical engineering,computer and data processing,mining,metallurgy,materials science,and interdisciplines thereof. 相似文献