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工业革命英语演讲稿doc
工业革命英语演讲稿
篇一:
工业革命演讲稿
Revolutionfirstbeganinthetextileindustry,andtextileindustrygetsthemainachievements.
Thefirstinventionisflyingshuttlein1733,itishand-operatedmachinewhichincreasedthespeedofweaving.
Anothergreatinventionisspinningjennyin1875.Itishome-basedmachinethatspunthread8timesfasterthanwhenspunbyhand.
In1856,sewingmachinemakethespeedofsewinggreatlyincreased.
Theyareflyingshuttleandspinningjenny.
Thethreeachievementsintransportationaresteamboat,macadamizedandlocomotive.
篇二:
关于美国二战的英语演讲稿
worldwar2
briefintroduce:
asweallknow,worldwar2,wasaglobalmilitaryconflict,lastingfrom1939
to1945.today,ldliketogiveyouabriefintroduceaboutthiswar.worldwar2involvedmostofthecountryatthattime,includingallofthegreat
powers,anditdividedinto2opposingmilitaryorganization:
theaxisandtheallies.now,letslookatpicture,thealliesmainlycontains:
america,thesoviet
union,britainandchina,theaxiscontains:
german,italy,japanandsoon.then,letsknowabouttheleadersofmainlycountryduringthewar.
1.adolfhitler:
thecorecharactersingermanyofworldwar2.in1939,heagainst
polandwhichlaunchedthesecondworldwar
4.roosevelt:
,althoughheisthedisabledperson,heisstillthegreatestleader
ofusawhosparkedthefireofthewholecountrywithoneheartnewspirit.note1:
theversaillestreatywasregardedasthefuseofthewar.note2:
nazi,thisnameisfullofattractive,butinfact,itisthesymbolofevil.reason:
theoutbreakofwarhadlotsofcau(本文来自:
WwW.xiaOCaofAnweN.Com小草范文网:
工业革命英语演讲稿)ses,butasfarasimconcerned,themost
importantreasonsarethat.inaword,duetotheseriouslyeconomiccrisis,the
axiswenttothewayoffascist.theytriedtheirwholecountrypowerandresources
todevelopthearmsandtoprepareforexpansion.inthemeantime,theaxiswerenotsatisfiedwiththeversaillestreatyandthey
allwantedtocontrolthewholeworld.while,unfortunately,thealliesfacedtothe
ambitionsoftheaxisnegativelyandtheywerebusydevelopingtheeconomic.so,after
that,theworldwar2brokeout.process:
ineuro.
inseptember,1939,germanylaunchedalighteningattackonpolandwhichled
britainandfrancedeclaredwarongermany2dayslater.afterthat,germany
capturedfranceandsomeothersmallwesterneuropeancountries.then,on1941.6.22,germanyopeningofthesecondfrontandattacktheussr.
1.leningraddefence:
inthenorth,thenorthernarmygroupsurroundedtheleningrad,itwas
thesymbolofthecultureinthesoviet.despitegreatsuffering,however,the
peopleofleningradrefusedtosurrender.whenfoodranout,peoplediedfrom
hungeranddisease.finally,theredarmybrokethethree-yearsiegeofleningrad
onjanuary15,1944.thiswaristhebloodiestbattlesinthehistoryofwarfare.
2.thebattleofmoscow:
moscowisthecapitaloftheunionofsovietsocialistrepublics(ussr)andit
isalsothelargestsovietcity.moscowwasregardedasthepoliticalcenter,sostalin
orderedthatalltheredarmysoldiersshouldneverstepback.thisbattlelasted
forabout6month,andendedwiththevictoryofussrin1942.01.07.
3.thebattleofstalingrad:
bythesummerof1942.inthesouth,thesouthernarmygrouppushedeastto
stalingrad,agreatindustrialcity,itwastheeconomiccentreofthesoviet.this
warwasamajorbattleofworldwarii.duringthisbattle,thesovietgiventhe
germanyarmyaheavyblow.afterwards,thegermancanneverleadedoffanattack.
soitstheturningpointsofthewar.inasian.
japanattackedtopearlharborin1941,12,7.thenamericajoinedthewar.thebattleofsonghu:
intheasianbattlefield.chinaplayedaveryimportant
role.shesufferedfromthemainattackofjapan,andshealsomadegreatsacrifice
toantifascist.class2
theturningpoints.石张磊7号normandylandings:
in1944,thesecondeuropeanfrontwasopened,britainand
theuslandedonthebeachesofnormandy.itmeansgermanywilltrendtofailurein
nearfuture.finallybattles.afterthealliesoccupiedberlin,in1945,5,8.germany
surrendered.onaugust,1945,theusdropped2atombombsonjapan,finally,japanese
surrendered.
theworldwar2cametotheend.mythought:
inmyhumbleopinion,despitethenon,justtobehonest,the
germanyarmywasthemostpowerfulforcesinthattime.butadolfhitlerhadmade
3unforgivablemistakeswhichletgermanywenttofail.first,hedidnttryhisbesttobeatbritain,soheforcedtofightontwofronts
whichletgermanyspentmoreresources.second,hedidntovercamethelenin
ziegler,sogermanyarmycouldntsuccesstomeetwithfinland,thecountrywas
attackedbythesovietin1939,andthepowerfulnorthernarmygroupcouldntgoto
southtosurroundthesovietarmy.finally,themostimportantpointisthathitler
adoptedapolicyofgenocide.duetothatreason,manyenemywasforcedtodolife
anddeathstruggle,thoughtheywerereluctantandhatetofight.result:
tag:
thankyouforlistening.篇二:
专业英语演讲稿(stealthmaterial)stealthmaterialintroductionchapter1:
goodafternooneveryone!
today,iwillgiveyouapresentationabout
thestealthmaterial.
chapter2:
firstly,letslookatagroupofpictures.itisapieceofinvisibility
cloak,whichwecanwearitfrombeingseenbyothers.maybeeveryoneofusallwant
tohaveatryingoftheamazingthing.chapter3:
lookingatthepictures,howwonderfultheyare!
thisisthestealth
materialthatiwanttointroducetoyoutoday.增加攻击性,获得最直接的军事效益。
因此,它在飞机、主战坦克、舰船、箭弹上应用,
将成为国防高技术的重要组成部分。
)chapter6:
next,thisistheclassificationofstealthmaterial.accordingtothe
applicationofstealthmaterialcanbedividedintostealthcoatingmaterial(隐身
涂层材料)andstealthstructurematerials(隐身结构材料)。
also,itcanbeclassified
aslaserstealth(激光隐身)、sound(声)、radar(雷达)、infrared(红外)、visiblelight
(可见光)accordingtothespectrum(频谱)ofstealthmaterial。
chapter7:
today,wefocusonseveralprinciplesofstealthmaterial.firstof
all,welearnaboutradarabsorbingmaterials.theworkingprincipleoftheradarcan
classifiedasreflection,transmissionandabsorption.refle-ctingisthatradar
usingthereflectionwavetodetecttheobject(雷达利用波的反射来探测物体).but,how
tomakewavesdonotreturnback?
------absorbedtheincidentwave(把入射的波吸
收掉).
chapter8:
then,its’stealthfeaturesrequirehimabletoabsorborthroughthe
radarwave,decreaseasfaraspossibletodetectthereflectedwave.theradarstealth
materialisgivenprioritytowithabsorbingmaterial.accordingtotheapplicationofstealthmaterialcanbedividedintostealth
coatingmaterial(隐身涂层材料)andstealthstructurematerials(隐身结构材料)。
chapter9:
let’sintroducethecoatingabsorbingmaterials,firstly,typecoating
absorbingmaterialisonthetargetsurfacecoatedwithalayeror涂敷型吸波材料是在目标表面涂覆了一层或多层吸波材料,因此对它的承载性没有特殊
要求。
这种材料使用起来方便快捷,在军用飞机、坦克、军舰上都有很广泛的应用。
组成:
基体材料、吸波剂(最关键)以及其它一些助剂组成。
按照吸波剂的化学成分可分为无机吸波剂(铁氧体、金属以及陶瓷),有机高分子吸波剂
(导电高聚物和视黄基席夫碱),手性吸波剂和智能吸波剂。
chapter10:
anothertypeofstealthmaterialisstructuralabsorbingmaterials(结
构型吸波材料).firstly,akindofmulti-functional一种多功能复合材料,具有承载和雷达隐身的双重功能。
由于需要承载,因此对这种材料的要求非常高。
组成:
基体材料(承载)和吸波剂复合。
基体材料主要是高分子类的一些材料实际应用:
洛克威尔国际公司用石墨/环氧复合材料和由玻璃布蒙皮、石墨、炭黑、橡
胶等组成的吸收层和蜂窝结构制造了f-117飞机的整套罩和进气口唇部等。
chapter11:
infraredstealthmaterials(红外隐身材料),theworkingprincipleof
infraredstealthmaterialsisusingthetargetfromtheinfraredtofind,identify
andtrackthetarget.usuallybackgroundtemperatureislow,lessradiationenergy.利用目标发出的红外线来发现、识别和跟踪目标。
通常背景的温度较低,辐射能量较小chapter12:
now,welearnaboutlaserstealthmaterial.ininfraredwave,
especiallyinthenearinfraredwavehasstrongabsorptionabilityorshieldingeffect,
makethedifferenceoftargetandenvironment.byreducingthetargetsemissivity
andtemperaturetoachieveinfraredstealth.隐身要求:
对红外波,特别是近红外波有
强吸收能力或屏蔽作用,使目标与环境的差别小。
通过降低目标的发射率或温度来达到红外隐
身目的。
theworkingprincipleoftheradarcanclassifiedaslaserstealthprocessissimilarwiththeprocessofradarstealth,mainisto
reducereflectioncoefficientonthesurfaceofthetarget,reducetheechopower
ofthelaserdetector.inaddition,alsocanbeusedonengineeringtransmissionmaterial,light
material,photochromicmaterial,variablepolarization,etc.
激光也可作为雷达使用,常被称为激光雷达。
与普通微波雷达相比,具有更高的分辨力、
抗干扰能力和隐蔽性。
激光隐身过程与雷达隐身过程相类似,主要是降低目标表面的反射系数,减小激光探测
器的回波功率。
激光吸收染料,包括菁类染料、钛菁类染料、金属络合物染料、游离基型染料、芳甲烷
型染料等。
此外,工程上还可采用透射材料、导光材料、光致变色材料、变偏振材料等。
chapter14:
theapplicationofstealthmaterials--------militaryscience。
隐身
材料的应用
duringworldwarii:
mosquitobomber(first)inthelate1950s,therepresentativeisamericasu-2reconnaissanceaircraftinthe1960s,withthelockheeddesignofsr-71blackbirdismosttypical.二战期间:
蚊式轰炸机(最早)20世纪50年代末,代表就是美国的u-2侦察机20世纪60年代,以美国洛克希德公司设计的sr-71黑鸟最为典型。
10年后,代表洛克希德的f-117a隐形战斗机和诺斯罗普公司的b-2a隐形轰炸机。
chapter18:
theapplicationofstealthmaterials--------forciviluse可建隐形罩
以避免障碍物阻挡手机信号
可在炼油厂上建一个隐形罩,使它不影响海边的美丽风景。
医生手术戴隐形手套,手会变得透明,不会挡住需要手术的部位篇三:
二战后英美对比
英语论文(内容为英语)摘要
实力的消长,国家的兴衰不可避免,国际关系的格局和中心舞台也就随之改变。
二战后,
西欧国家百废待兴。
法西斯德国、日本成为战败国,法国和英国受到严重削弱,欧洲的政治
中心地位基本丧失。
美国大发战争横财,经济、军事实力膨胀,成为资本主义世界的头号强
国,资本主义世界由“英国时代”走进“美国世纪”。
关键词:
英国美国崛起工业革命二战霸权主义abstract
keywords:
american,britain,rise,theindustrialrevolution,worldwar
ii,hegemonism1themaintopicofthethesisbeforetheworldwarii,worldhegemonyhasbelongedtothebritain,butafter
theworldwarii,thebritishworlddominationwasreplacedbytheunitedstates,