英语演讲稿p pt(精选多篇)

-精选财经经济类资料- -最新财经经济资料-感谢阅读- 1 英语演讲稿 ppt(精选多篇) 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. practicing guitar making me happy when i am sad. my hobbies refer to music, 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 different kinds of -精选财经经济类资料- -最新财经经济资料-感谢阅读- 2 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 to 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 zhong hua” is china traditional culturalquiz. 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 on -精选财经经济类资料- -最新财经经济资料-感谢阅读- 3 in its the lakeside and intoxicates tens ofthousands of people arms with their wonderful charm and its 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 knowledge acquired from travel, as you will have found in your life, is no less valuable than that from any influential reference book. 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, so that all the citizens could attain the benefits of beauty, community, and democracy. in harveys opinion, the -精选财经经济类资料- -最新财经经济资料-感谢阅读- 4 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 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 address: 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 buildings. the technologies -精选财经经济类资料- -最新财经经济资料-感谢阅读- 5 associated with green buildings include: -energy conservation -water conservation -material selection -use of renewable materials -occupant health and indoor environment quality -site ecology -recycling the green building can be residential, commercial, retail and industrial buildings. 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. the idea of green and healthy cities is becoming more important nowadays. the better city should be planed for health and -精选财经经济类资料- -最新财经经济资料-感谢阅读- 6 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 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 movement richard reed and sara j. wilkinson green building-issues for the valuation process, uiversity of melbourne 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, so that all the citizens could -精选财经经济类资料- -最新财经经济资料-感谢阅读- 7 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 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 address: 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 -精选财经经济类资料- -最新财经经济资料-感谢阅读- 8 environmental impact but also provide better buildings. 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 -recycling the green building can be residential, commercial, retail and industrial buildings. 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. the idea of green and healthy cities -精选财经经济类资料- -最新财经经济资料-感谢阅读- 9 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 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 movement richard reed and sara j. wilkinson green building-issues for the valuation process, uiversity of melbourne 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 - -精选财经经济类资料- -最新财经经济资料-感谢阅读- 10 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 activities 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 -精选财经经济类资料- -最新财经经济资料-感谢阅读- 11 original animation. 1909 年，美国人 winsor mccray 用一万张图片表现一段动画故事，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 mature, 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 -精选财经经济类资料- -最新财经经济资料-感谢阅读- 12 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 european 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 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 video thanks 1、lathe -精选财经经济类资料- -最新财经经济资料-感谢阅读- 13 2、value of two yuan of the third series of the rmb the turner 3、a lathe is a machine tool which rotates the workpiece on its axis to perform various operations such as cutting, sanding, knurling , drilling, or deformation with tools that are applied to the workpiece to create an object which has symmetry about an axis of rotation. 4、history the lathe is an ancient tool, dating at least to ancient egypt and known and used in assyria and ancient greece . the origin of turning dates to around 1300 bc when the ancient egyptians first developed a two-person lathe. ancient rome improved the egyptian design with the addition of a turning bow. in the middle ages a pedal replaced hand-operated turning, the system today is called the “spring pole” lathe. spring pole lathes were in common -精选财经经济类资料- -最新财经经济资料-感谢阅读- 14 use into the early 20th century. during the industrial revolution, mechanized power generated by water wheels or steam engines was transmitted to the lathe via line shafting, between the late 19th and mid-20th centuries, individual electric motors at each lathe replaced line shafting as the power source. beginning in the 1950s, servomechanism were applied to the control of lathes and other machine tools via numerical control, today manually controlled and cnc lathes coexist in the manufacturing industries . 5、description ：parts explanation 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 -精选财经经济类资料- -最新财经经济资料-感谢阅读- 15 parallel to assure accuracy of movement. ? headstock 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 with a geometric ratio by moving levers. ? spindle 心轴，主轴: hole through the headstock to which bar stock can be 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 or 4-jaw to clamp part being machined. ? chuck: allows the mounting of difficult workpieces that are not round, square or triangular. ? tailstock 尾架: fits on the inner ways of the bed and can slide towards any -精选财经经济类资料- -最新财经经济资料-感谢阅读- 16 position the headstock to fit the length of the work piece. an optional taper turning attachment would be mounted to it. ? tailstock quill 尾架套管 : has a morse taper to hold a lathe center, drill bit or other tool. ? carriage 托架，滑动架: 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 rest 复式刀架: mounted to the cross slide, it pivots around the tool post. ? apron 床鞍: attached to the front of the carriage, it has the mechanism and controls for moving the carriage and cross slide. -精选财经经济类资料- -最新财经经济资料-感谢阅读- 17 ? feed rod 进给杆: has a keyway, with two reversing pinion gears, either of which can be meshed with the mating 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. ? 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 -精选财经经济类资料- -最新财经经济资料-感谢阅读- 18 bear against the workpiece opposite the cutting tool to prevent deflection. 69、 description：accessories three-jaw chuck : 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 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. collet 弹性夹头 : a collet is a holding devicespecifically, a subtype of chuck that 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 -精选财经经济类资料- -最新财经经济资料-感谢阅读- 19 used to hold a workpiece or a tool. faceplate 花盘: a lathe faceplate is the basic workholding accessory for a wood or metal turning lathe. it is a circular metal 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 threaded holes in the faceplate itself. dead center 死顶尖: dead center mounted in the spindle