英语演讲稿ppt(精选多篇).doc

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1、如有侵权，请联系网站删除，仅供学习与交流英语演讲稿ppt(精选多篇)【精品文档】第 22 页英语演讲稿ppt(精选多篇)第一篇：英语ppt演讲稿吉他唱歌then,i am going to share the experience of learning guitar and singing songs.to be honest ,i am not good at either of them, i just like them. singing can be used to relieve my fatigues and can help me improve my accent. prac

2、ticing guitar making me happy when i am sad. my hobbies refer tomusic, it said that singing along with music or dancing to rhythm can make people clever. i am always singing at home to share each others joys and sorrow in our life and to learn many songs.泼水节it goes without saying that there are many

3、 different kinds of activitiesand they can not only broaden our minds but also add more fun to our life.for example , thailand water splashing festival ,it represents thailand thai new year, the water-splashing festival is in mid-april and lasts three to five days. water is the most precious thing t

4、o the tai people,they believe the holy water make you get rid of bad luck,the tai peoples wish for your good fortune and happiness sincerely.印尼美食节in the indonesian food festival , we satisfy our taste buds,also, we feastedour eyes on the he traditional dances, songs and music.风雅中华and the “feng ya zh

5、ong hua” is china traditionalculturalquiz. we had a chance that enabled our to presen our knowledge and practice ourcooperative learning skills.五缘水乡 it is a wetland park.where we can see manyblack swans . it is surrounded by verdant trees onin its the lakeside and intoxicates tens ofthousands of peo

6、ple arms with their wonderful charm andits radiant and enchanting scenery in lake water.you can learn much during your travel about the geography, biology, and history of the places you visit. 小结no matter how well educated you are, there is always a lot for you to learn through travelling. the knowl

7、edge acquired from travel, as you will have found in your life, is no less valuable than that from any influential reference book.第二篇：英语ppt演讲稿to make a better city, planners aimed at creating a city in which the insalubrious environment and social structure would be defeated by a reordering of physi

8、cal and social arrangements, so that all the citizens could attain the benefits of beauty, community, and democracy. in harveys opinion, the better city should confront on the postmodernist challenge to political economy, and deal with environmental sustainable.however i think green buildings could

9、make good cities, and also citizens will have a best quality of life. according to the world green building councils definition, “to significantly reduce or eliminate the negative impact of buildings on the environment and on the building occupants, green building design and construction practices a

10、ddress: sustainable site planning, safeguarding water and water efficiency, energy efficiency, conservation of materials and resources, and indoor environmental quality.”the green building, which is sustainable in the built environment, can reduce environmental impact but also provide better buildin

11、gs. the technologies associated with green buildings include:-energy conservation-water conservation-material selection-use of renewable materials-occupant health and indoor environment quality-site ecology-recyclingthe green building can be residential, commercial, retail and industrial buildings.

12、for example, the green building uses water-mining plant to recycle water on toilet flushing, watering the garden, and washing cars. the building also uses phase-change materials for cooling, automatic night-purge windows, wavy concrete ceilings, which saves a lot of money and become more sustainable

13、.the idea of green and healthy cities is becoming more important nowadays. the better city should be planed for health and well-being by planners, and they will mainly focus on service facilities, educations. the good city will also need to be safe in community, and make community more walkable, and

14、 has an urban design with exquisite streetscape. however the planner keeps developing new ideas of how cities should be changed, therefore the city will become more livable and sustainable in the future.reference:susan s. fainstein, can we make the cities we want? the urban movementrichard reed and

15、sara j. wilkinson (oct, 2014) green building-issues for the valuation process, uiversity of melbourne第三篇：英语ppt演讲稿to make a better city, planners aimed at creating a city in which the insalubrious environment and social structure would be defeated by a reordering of physical and social arrangements,

16、so that all the citizens could attain the benefits of beauty, community, and democracy. in harveys opinion, the better city should confront on the postmodernist challenge to political economy, and deal with environmental sustainable.however i think green buildings could make good cities, and also ci

17、tizens will have a best quality of life. according to the world green building councils definition, “to significantly reduce or eliminate the negative impact of buildings on the environment and on the building occupants, green building design and construction practices address: sustainable site plan

18、ning, safeguarding water and water efficiency, energy efficiency, conservation of materials and resources, and indoor environmental quality.”the green building, which is sustainable in the built environment, can reduce environmental impact but also provide better buildings. the technologies associat

19、ed with green buildings include:-energy conservation-water conservation-material selection-use of renewable materials-occupant health and indoor environment quality-site ecology-recyclingthe green building can be residential, commercial, retail and industrial buildings. for example, the green buildi

20、ng uses water-mining plant to recycle water on toilet flushing, watering the garden, and washing cars. the building also uses phase-change materials for cooling, automatic night-purge windows, wavy concrete ceilings, which saves a lot of money and become more sustainable.the idea of green and health

21、y cities is becoming more important nowadays. the better city should be planed for health and well-being by planners, and they will mainly focus on service facilities, educations. the good city will also need to be safe in community, and make community more walkable, and has an urban design with exq

22、uisite streetscape. however the planner keeps developing new ideas of how cities should be changed, therefore the city will become more livable and sustainable in the future.reference:susan s. fainstein, can we make the cities we want? the urban movementrichard reed and sara j. wilkinson (oct, xx) g

23、reen building-issues for the valuation process, uiversity of melbourne第四篇：英语animation专题ppt演讲稿我非常荣幸能到前面来演讲 ，这就是我这次的主题动漫i am much honored to come to the front speakers; this is my current theme - animation早在1831年，法国人joseph antoine plateau把画好的图片按照顺序放在一部机器的圆盘上，圆盘可以在机器的带动下转动。这部机器还有一个观察窗，用来观看活动图片效果。在机器的带动

24、下，圆盘低速旋转。圆盘上的图片也随着圆盘旋转。从观察窗看过去，图片似乎动了起来，形成动的画面，这就是原始动画的雏形。as early as 1831, the french joseph antoine plateau in order to draw a good picture on a machine in accordance with the disc, the disc can be driven by rotation of the machine. this machine also has an observation window to watch the activiti

25、es of picture effects. the machine, driven by low-speed rotating disk. the picture on the disc along with the disk rotation. from the observation window at the past, pictures seem to move together to form a moving picture, which is the prototype of the original animation.1909年，美国人winsor mccray用一万张图片

26、表现一段动画故事，这是迄今为止世界上公认的第一部象样的动画短片。从此以后，动画片的创作和 制作水平日趋成熟，人们已经开始有意识的制作表现各种内容的动画片in 1909, americans winsor mccray performance with a million images an animation story, this is by far the worlds recognized as the first decent animation clips. since then, the level of animation creation and production of m

27、ature, people have started to make sense of the performance of various elements of the cartoon.1926年 万氏兄弟成功的发展了中国第一部动画片 这也是中国美术的里程碑。in 1926, wangs brother successfully developed chinas first cartoon it is also the beginning of chinese art pieces.动漫有以下三种风格 欧美风格 中国风格 日式风格there are three styles of euro

28、pea(请关注：WWw.hAOWoRD.cOM)n and american animation style of chinese-style japanese style 无论如何，有不同的动画给了我们巨大的喜悦。它作为一个媒体，使用或幽默夸张的款式或到社会现实的阴沉深的形式还指导我们的成长。也是一个非常有前途的行业?anyway, have a different animation gives us immense joy. it also guided our growth as a form of media, use or exaggerated style of humor or

29、 the gloomy deep into the social reality. is also a very promising industry 最后 让我们看一个动漫小视频finally, let us look at a small animation videothanks第五篇：专业英语ppt演讲稿1、lathe leie2、value of two yuan of the third series of the rmb the turner3、a lathe is a machine tool which rotates the workpiece on its axis to

30、 perform various v?ri?s operations such as cutting, sanding(砂磨), knurlingn?:li? (滚花), drilling, or deformation with tools that are applied to the workpiece to create an object which has symmetrysimitri (对称) about an axis of rotation.（center lathe，vertical lathe）4、historythe lathe is an ancient tool,

31、 dating at least to ancient egypt i:d?ipt and known and used in assyria ?siri? and ancient greece ri:s.the origin ?rid?in, ?:- of turning dates to around 1300 bc when the ancient ein?nt egyptians i:d?ip?nz first developed a two-person lathe. （one person would turn the wood work piece with a rope whi

32、le the other used a sharp tool to cut shapes in the wood.） ancient rome improved the egyptian design with the addition of a turning bow. in the middle ages a pedal replaced hand-operated turning, （freeing both the craftsmans hands to hold the woodturning tools. the pedal was usually connected to a p

33、ole, often a straight-grained sapling.） the system today is called the spring pole lathe. spring pole lathes were in common use into the early 20th century.during the industrial revolution, mechanized mek?naizd power generated by water wheels or steam engines was transmitted to the lathe via line sh

34、afting,( allowing faster and easier work. metalworking lathes evolved into heavier machines with thicker, more rigid parts.) between the late 19th and mid-20th centuries, individual electric motors m?ut? at each lathe replaced line shafting as the power source. beginning in the 1950s, servomechanism

35、,s?:v?umek?niz?m, s?:v?u,me- (伺服机构) were applied to the control of lathes and other machine tools via numerical control, (which often was coupled with computers to yield computerized numerical control.) today manually controlled and cnc lathes coexist（共存） in the manufacturing industries ind?stri.5、d

36、escription：partsexplanation of the standard components of most lathes:? bed床身: usually made of cast iron. provides a heavy rigid frame on which all the main components are mounted.? ways床身导轨: inner and outer guide rails that are precision machined parallel to assure accuracy of movement.? headstockh

37、edst?k床头箱，主轴箱: mounted in a fixed position on the inner ways, usually at the left end. using a chuck, it rotates the work.? gearbox 齿轮箱变速器: inside the headstock, providing multiple speeds witha geometric ratio by moving levers.? spindlespindl心轴，主轴: hole through the headstock to which bar stock can b

38、e fed, which allows shafts that are up to 2 times the length between lathe centers to be worked on one end at a time.? chuck卡盘: 3-jaw (self centering) or 4-jaw (independent) to clamp part being machined.? chuck: allows the mounting of difficult workpieces that are not round, square or triangular.? t

39、ailstock尾架: fits on the inner ways of the bed and can slide towards any position the headstock to fit the length of the work piece. an optional taper turning attachment would be mounted to it.? tailstock quillkwil尾架套管: has a morse taper to hold a lathe center, drill bit or other tool.? carriage托架，滑动

40、架: moves on the outer ways. used for mounting and moving most the cutting tools.? cross slide横刀架，横拖板，横溜板: mounted on the traverse slide of the carriage, and uses a handwheel to feed tools into the workpiece.? tool post刀架，刀座: to mount tool holders in which the cutting bits are clamped. ? compound res

41、t复式刀架: mounted to the cross slide, it pivots around the tool post.? aproneipr?n床鞍: attached to the front of the carriage, it has the mechanism and controls for moving the carriage and cross slide.? feed rod进给杆: has a keyway, with two reversing pinion gears, either of which can be meshed with the mat

42、ing bevel gear to forward or reverse the carriage using a clutch.? lead screw丝杠: for cutting threads.? split nut开合螺母: when closed around the lead screw, the carriage is driven along by direct drive without using a clutch.? quick change gearbox快换齿轮箱: controls the movement of the carriage using levers

43、.? steady rest固定中心架: clamped to the lathe ways, it uses adjustable fingers to contact the workpiece and align it. can be used in place of tailstock or in the middle to support long or unstable parts being machined.? follow rest跟刀架: bolted to the lathe carriage, it uses adjustable fingers to bear aga

44、inst the workpiece opposite the cutting tool to prevent deflection.69、description：accessories ?kses?rithree-jaw d?: chuck t?k: self-centering three-jaw chuck and key with one jaw removed and inverted showing the teeth that engage in the scroll plate. the scroll plate is rotated within the chuck body

45、 by the key, the scroll engages the teeth on the underside of the jaws which moves the three jaws in unison, to tighten or release the workpiece.four-jaw chuck :independent four-jaw chuck, also known as a universal chuck, with the jaws independently set. the key is used to adjust each jaw separately

46、. collet弹性夹头: a collet k?lit is a holding devicespecifically, a subtype of chuckthat forms a collar around the object to be held and exerts a strong clamping force on the object when it is tightened, usually by means of a tapered outer collar. it may be used to hold a workpiece or a tool.faceplate花盘

47、: a lathe faceplate is the basic workholding accessory for a wood or metal turning lathe. it is a circular metal (usually cast iron) plate which fixes to the end of the lathe spindle. the workpiece is then clamped to the faceplate, typically using t-nuts in slots in the faceplate, or less commonly t

48、hreaded holes in the faceplate itself.dead center死顶尖: dead center (the conical piece) mounted in the spindle of a lathe and being used to support a workpiece being driven by a carrier setup live center活顶尖:a live center or revolving center is constructed so that the 60 center runs in its own bearings

49、 and is used at the non-driven or tailstock end of a machine.2 it allows higher turning speeds without the need for separate lubrication ,lu:brikei?n, and also greater clamping pressures.lathe carrierk?ri?车床鸡心夹头: a lathe dog, also known as a lathe carrier, is a device that clamps around the workpiece and allows the rotary motion of the machines spindle to be transmitted to the workpiece.mandr