尺寸标注的研究型教学

由于尺寸标注的重要性、尺寸标注与图形表达的关联性、尺寸标注本身的综合性和复杂性,我认为进一步介绍尺寸标注是必要的。此外,对尺寸标注的教学研究,无疑促进了尺寸标注的研究课题,即标注的智能化研究。     

AutoCAD 2000尺寸标注技巧

通过AutoCAD 2000尺寸标注中比较典型的带前缀后缀的标注及引线标注的各种常见形式的标注方法分析,用实例说明了标注的设置、修改和处理技巧,对高效、准确、美观地完成各种尺寸标注,恰当地使用标注方式和标注设置,提高标注效率具有指导意义.     

浅谈AutoCAD尺寸标注在《机械制图》教学中的应用

AutoCAD尺寸标注方面也有强大的功能,利用AutoCAD的尺寸标注命令,可以方便快速地标注图纸中各种方向、形式的尺寸,将它应用到《机械制图》教学中,非常有利于学生对尺寸标注的分析理解,在正确理解尺寸注法的基本规则;正确、完整、清晰地标注组合体尺寸等教学难点问题中得到较好的教学效果。     

零件图尺寸标注的合理性

本文从几个方面阐述零件图上尺寸的合理标注,有助于训练学生明白尺寸标注的重点要求。     

AUTOCAD中标准尺寸的标注方法

针对AutoCAD中尺寸标注变量的缺省设置不符合我国机械制图国家标准要求的情况,进行尺寸变量分析,并提出变量设置及标注方法。     

合理标注零件尺寸方法的分析

合理标注零件尺寸，是每个设计师不可回避的问题。本从零件功能分析入手，提出零件的重要尺寸要首先直接标注；零件的重要表面要做主要尺寸基准；标注零件尺寸要兼顾其工艺要求和零件尺寸的标注步骤等，在上述几个方面进行了比较系统的阐述，对设计人员和图学教育工作将有所补益。     

关于《机械制图》教学中几个尺寸标注问题的分析

尺寸标注是机械图样的一项重要内容，它贯穿机械制图教学的整个过程，但学生往往掌握不好，在标注过程中普遍存在大量问题。本文从教学的角度出发，通过多年的教学实践，对平面图形、组合体、零件图形的尺寸标注中学生普遍存在的疑问，提出自己的见解，循序渐进地进行了分析和讨论。     

中职机械制图教学中的尺寸标注问题

物体的大小及各部分的相互位置关系需要用标注尺寸来确定,所以,尺寸是机械图样的重要组成部分。如果图样上没有标注尺寸,工人师傅就无法进行生产、组装。如果尺寸标注有问题,则无法加工出合格的工件。因此,尺寸标注是机械制图教学中的重点,它贯穿于机械制图教学的整个过程。     

Auto CAD中公差标注形式及其设置技巧

通过对AutoCAD绘图中公差标注的各种常见形式的变化及其标注方法分析,用实例说明了"公差"选项卡下各个输入(选择)项的设置和处理技巧,对恰当地使用标注设置,规范、美观地完成各种公差尺寸标注具有指导意义.     

工程图样中尺寸标注的探讨

在绘制和阅读工程图样时,尺寸标注是一个非常重要且不易掌握的环节.详细论述了标注尺寸的基本规则及标注时的具体要求,并通过具体实例详细论述了标注尺寸的方法和步骤,以及标注尺寸时应注意的事项.     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

只要努力,不要后悔

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.     

浅谈移民问题

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.     

Sister Carrie, an Adherent of Desires

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.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

库克斯顿城堡

城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!     

The Reader Response Approach to Teaching of English Literature

During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context.