英语ppt演讲稿(精选多篇).doc

英语ppt演讲稿(精选多篇) 吉他唱歌then,iamgoingtosharetheexperienceoflearningguitarandsingingsongs.tobehonest,iamnotgoodateitherofthem,ijustlikethem.singingcanbeusedtorelievemyfatiguesandcanhelpmeimprovemyaent.practicingguitarmakingmehappywheniamsad.myhobbiesreferto music,itsaidthatsingingalongwithmusicordancingtorhythmcanmakepeopleclever.iamalwayssingingathometoshareeachothersjoysandsorrowinourlifeandtolearnmanysongs. 泼水节itgoeswithoutsayingthattherearemanydifferentkindsofactivitiesandtheycannotonlybroadenourmindsbutalsoaddmorefuntoourlife.forexample,thailandwatersplashingfestival,itrepresentsthailandthainewyear,thewater-splashingfestivalisinmid-aprilandlaststhreetofivedays.wateristhemostpreciousthingtothetaipeople,theybelievetheholywatermakeyougetridofbadluck,thetaipeopleswishforyourgoodfortuneandhappinesssincerely. 印尼美食节intheindonesianfoodfestival,wesatisfyourtastebuds,also,wefeastedoureyesonthehetraditionaldances,songsandmusic. 风雅中华andthe“fengyazhonghua”ischinatraditional culturalquiz.wehadachancethatenabledourtopresenourknowledgeandpracticeourcooperativelearningskills. 五缘水乡itisawetlandpark.wherewecanseemanyblackswans.itissurroundedbyverdanttreeson initsthelakesideandintoxicatestensofthousandsofpeoplearmswiththeirwonderfulcharmand itsradiantandenchantingsceneryinlakewater.youcanlearnmuchduringyourtravelaboutthegeography,biology,andhistoryofthe(谢谢你访问好范文)placesyouvisit.小结nomatterhowwelleducatedyouare,thereisalwaysalotforyoutolearnthroughtravelling.theknowledgeacquiredfromtravel,asyouwillhavefoundinyourlife,isnolessvaluablethanthatfromanyinfluentialreferencebook. tomakeabettercity,plannersaimedatcreatingacityinwhichtheinsalubriousenvironmentandsocialstructurewouldbedefeatedbyareorderingofphysicalandsocialarrangements,sothatallthecitizenscouldattainthebenefitsofbeauty,munity,anddemocracy.inharveysopinion,thebettercityshouldconfrontonthepostmodernistchallengetopoliticaleconomy,anddealwithenvironmentalsustainable. howeverithinkgreenbuildingscouldmakegoodcities,andalsocitizenswillhaveabestqualityoflife.aordingtotheworldgreenbuildingcouncilsdefinition,“tosignificantlyreduceoreliminatethenegativeimpactofbuildingsontheenvironmentandonthebuildingoupants,greenbuildingdesignandconstructionpracticesaddress:sustainablesiteplanning,safeguardingwaterandwaterefficiency,energyefficiency,conservationofmaterialsandresources,andindoorenvironmentalquality.”thegreenbuilding,whichissustainableinthebuiltenvironment,canreduceenvironmentalimpactbutalsoprovidebetterbuildings.thetechnologiesassociatedwithgreenbuildingsinclude: -energyconservation -waterconservation -materialselection -useofrenewablematerials -oupanthealthandindoorenvironmentquality -siteecology -recycling thegreenbuildingcanberesidential,mercial,retailandindustrialbuildings.forexample,thegreenbuildinguseswater-miningplanttorecyclewaterontoiletflushing,wateringthegarden,andwashingcars.thebuildingalsousesphase-changematerialsforcooling,automaticnight-purgewindows,wavyconcreteceilings,whichsavesalotofmoneyandbeemoresustainable. theideaofgreenandhealthycitiesisbeingmoreimportantnowadays.thebettercityshouldbeplanedforhealthandwell-beingbyplanners,andtheywillmainlyfocusonservicefacilities,educations.thegoodcitywillalsoneedtobesafeinmunity,andmakemunitymorewalkable,andhasanurbandesignwithexquisitestreetscape.howevertheplannerkeepsdevelopingnewideasofhowcitiesshouldbechanged,thereforethecitywillbeemorelivableandsustainableinthefuture. reference: susans.fainstein,canwemakethecitieswewant?theurbanmovement richardreedandsaraj.wilkinson(oct,xx)greenbuilding-issuesforthevaluationprocess,uiversityofmelbourne tomakeabettercity,plannersaimedatcreatingacityinwhichtheinsalubriousenvironmentandsocialstructurewouldbedefeatedbyareorderingofphysicalandsocialarrangements,sothatallthecitizenscouldattainthebenefitsofbeauty,munity,anddemocracy.inharveysopinion,thebettercityshouldconfrontonthepostmodernistchallengetopoliticaleconomy,anddealwithenvironmentalsustainable. howeverithinkgreenbuildingscouldmakegoodcities,andalsocitizenswillhaveabestqualityoflife.aordingtotheworldgreenbuildingcouncilsdefinition,“tosignificantlyreduceoreliminatethenegativeimpactofbuildingsontheenvironmentandonthebuildingoupants,greenbuildingdesignandconstructionpracticesaddress:sustainablesiteplanning,safeguardingwaterandwaterefficiency,energyefficiency,conservationofmaterialsandresources,andindoorenvironmentalquality.”thegreenbuilding,whichissustainableinthebuiltenvironment,canreduceenvironmentalimpactbutalsoprovidebetterbuildings.thetechnologiesassociatedwithgreenbuildingsinclude: -energyconservation -waterconservation -materialselection -useofrenewablematerials -oupanthealthandindoorenvironmentquality -siteecology -recycling thegreenbuildingcanberesidential,mercial,retailandindustrialbuildings.forexample,thegreenbuildinguseswater-miningplanttorecyclewaterontoiletflushing,wateringthegarden,andwashingcars.thebuildingalsousesphase-changematerialsforcooling,automaticnight-purgewindows,wavyconcreteceilings,whichsavesalotofmoneyandbeemoresustainable. theideaofgreenandhealthycitiesisbeingmoreimportantnowadays.thebettercityshouldbeplanedforhealthandwell-beingbyplanners,andtheywillmainlyfocusonservicefacilities,educations.thegoodcitywillalsoneedtobesafeinmunity,andmakemunitymorewalkable,andhasanurbandesignwithexquisitestreetscape.howevertheplannerkeepsdevelopingnewideasofhowcitiesshouldbechanged,thereforethecitywillbeemorelivableandsustainableinthefuture. reference: susans.fainstein,canwemakethecitieswewant?theurbanmovement richardreedandsaraj.wilkinson(oct,xx)greenbuilding-issuesforthevaluationprocess,uiversityofmelbourne 1、latheleie 2、valueoftwoyuanofthethirdseriesofthermbtheturner 3、alatheisamachinetoolwhichrotatestheworkpieceonitsaxistoperformvariousv?ri?soperationssuchascutting,sanding(砂磨),knurlingn?:li?(滚花),drilling,ordeformationwithtoolsthatareappliedtotheworkpiecetocreateanobjectwhichhassymmetrysimitri(对称)aboutanaxisofrotation.（centerlathe，verticallathe） 4、history thelatheisanancienttool,datingatleasttoancientegypti:d?iptandknownandusedinassyria?siri?andancientgreeceri:s. theorigin?rid?in,?:-ofturningdatestoaround1300bcwhentheancientein?ntegyptiansi:d?ip?nzfirstdevelopedatwo-personlathe.（onepersonwouldturnthewoodworkpiecewitharopewhiletheotherusedasharptooltocutshapesinthewood.）hemiddleagesapedalreplacedhand-operatedturning,（freeingboththecraftsmanshandstoholdthewoodturningtools.thepedalwasusuallyconnectedtoapole,oftenastraight-grainedsapling.）thesystemtodayiscalledthespringpolelathe.springpolelatheswereinmonuseintotheearly20thcentury. duringtheindustrialrevolution,mechanizedmek?naizdpowergeneratedbywaterwheelsorsteamengineswastransmittedtothelathevialineshafting,(allowingfasterandeasierwork.metalworkinglathesevolvedintoheaviermachineswiththicker,morerigidparts.)betweenthelate19thandmid-20thcenturies,individualelectricmotorsm?ut?ateachlathereplacedlineshaftingasthepowersource.beginninginthe1950s,servomechanism,s?:v?umek?niz?m,s?:v?u,me-(伺服机构)wereappliedtothecontroloflathesandothermachinetoolsvianumericalcontrol,(whichoftenwascoupledwithputerstoyieldputerizednumericalcontrol.)todaymanuallycontrolledandclathescoexist（共存）inthemanufacturingindustriesind?stri. 5、description：parts explanationofthestandardponentsofmostlathes: ?bed床身:videsaheavyrigidframeonwhichallthemainponentsaremounted. ?ways床身导轨:innerandouterguiderailsthatareprecisionmachinedparalleltoassureauracyofmovement. ?headstockhedst?k床头箱，主轴箱:mountedinafixedpositionontheinnerways,usuallyattheleftend.usingachuck,itrotatesthework. ?gearbox齿轮箱变速器:insidetheheadstock,providingmultiplespeedswith ageometricratiobymovinglevers. ?spindlespindl心轴，主轴:holethroughtheheadstocktowhichbarstockcanbefed,whichallowsshaftsthatareupto2timesthelengthbetweenlathecenterstobeworkedononeendatatime. ?chuck卡盘:3-jaw(selfcentering)or4-jaw(independent)toclamppartbeingmachined. ?chuck:allowsthemountingofdifficultworkpiecesthatarenotround,squareortriangular. ?tailstock尾架:fitsontheinnerwaysofthebedandcanslidetowardsanypositiontheheadstocktofitthelengthoftheworkpiece.anoptionaltaperturningattachmentwouldbemountedtoit. ?tailstockquillkwil尾架套管:hasamorsetapertoholdalathecenter,drillbitorothertool. ?carriage托架，滑动架:movesontheouterways.usedformountingandmovingmostthecuttingtools. ?crossslide横刀架，横拖板，横溜板:mountedonthetraverseslideofthecarriage,andusesahandwheeltofeedtoolsintotheworkpiece. ?toolpost刀架，刀座:tomounttoolholdersinwhichthecuttingbitsareclamped.?poundrest复式刀架:mountedtothecrossslide,itpivotsaroundthetoolpost. ?aproneipr?n床鞍:attachedtothefrontofthecarriage,ithasthemechanismandcontrolsformovingthecarriageandcrossslide. ?feedrod进给杆:hasakeyway,withtworeversingpiniongears,eitherofwhichcanbemeshedwiththematingbevelgeartoforwardorreversethecarriageusingaclutch. ?leadscrew丝杠:forcuttingthreads. ?splitnut开合螺母:whenclosedaroundtheleadscrew,thecarriageisdrivenalongbydirectdrivewithoutusingaclutch. ?quickchangegearbox快换齿轮箱:controlsthemovementofthecarriageusinglevers. ?steadyrest固定中心架:clampedtothelatheways,itusesadjustablefingerstocontacttheworkpieceandalignit.canbeusedinplaceoftailstockorinthemiddletosupportlongorunstablepartsbeingmachined. ?followrest跟刀架:boltedtothelathecarriage,itusesadjustablefingerstobearagainsttheworkpieceoppositethecuttingtooltopreventdeflection. 69、description：aessories?kses?ri three-jawd?:chuckt?k:self-centeringthree-jawchuckandkeywithonejawremovedandinvertedshowingtheteeththatengageinthescrollplate.thescrollplateisrotatedwithinthechuckbodybythekey,thescrollengagestheteethontheundersideofthejawswhichmovesthethreejawsinunison,totightenorreleasetheworkpiece. four-jawchuck:independentfour-jawchuck,alsoknownasauniversalchuck,withthejawsindependentlyset.thekeyisusedtoadjusteachjawseparately.collet弹性夹头:acolletk?litisaholdingdevicespecifically,asubtypeofchuckthatformsacollararoundtheobjecttobeheldandexertsastrongclampingforceontheobjectwhenitistightened,usuallybymeansofataperedoutercollar.itmaybeusedtoholdaworkpieceoratool. faceplate花盘:alathefaceplateisthebasicworkholdingaessoryforawoodormetalturninglathe.itisacircularmetal(usuallycastiron)platewhichfixestotheendofthelathespindle.theworkpieceisthenclampedtothefaceplate,typicallyusingt-nutsinslotsinthefaceplate,orlessmonlythreadedholesinthefaceplateitself. deadcenter死顶尖:deadcenter(theconicalpiece)mountedinthespindleofalatheandbeingusedtosupportaworkpiecebeingdrivenbyacarriersetuplivecenter活顶尖:alivecenterorrevolvingcenterisconstructedsothatthe60centerrunsinitsownbearingsandisusedatthenon-drivenortailstockendofamachine.2itallowshigherturningspeedswithouttheneedforseparatelubrication,lu:brikei?n,andalsogreaterclampingpressures. lathecarrierk?ri?车床鸡心夹头:alathedog,alsoknownasalathecarrier,isadevicethatclampsaroundtheworkpieceandallowstherotarymotionofthemachinesspindletobetransmittedtotheworkpiece. mandrelm?ndr?l心轴:anobjectusedtoshapemachinedwork. 10、application lathesareusedinwoodturning,metalworking,metalspinning（旋压）,andglass-working.lathescanbeusedtoshapepottery,thebest-knowndesignbeingthepotterswheel陶车.mostsuitablyequippedmetalworkinglathescanalsobeusedtoproducemostsolidsofrevolution,planesurfacesandscrewthreadsorhelices.ornamental,?:n?ment?llathescanproducethree-dimensionalsolids（实体）ofincredibleplexity 11、examplesofworkproducedfromalathe 12、thankyou! imveryhappytohavethisopptunitytogiveyouatalk.today,mytopicislathe. iknowmanyofyouarefamiliarwiththistopic canyouhearmeclearly? ithinktiwouldbebesttostartoutbylookingatthepictureonthescreen iwouldliketotalkaboutfirstisthedefinitionofthelathe questionkwest?n thatisall,thankyouverymuch doyouhaveanyquestions?pleaseshowmeyourhand. whoelse? ithinkwehavetimeforjustonemorequestion traditionalmartialartsarepartofchinasoutstandingcultureanditcontainsthespiritofthechinesenation-specificvalues,wayofthinking,imagination,whichembodiesthechinesenationsvitalityandcreativity,andintelligencearethecrystallizationofthechinesepeople,butalsoatreasureforallmankindcivilization. theoriginofchinesemartialarts中国武术的起源 wushuinchinagoesbacktoancienttimes,originatingfromproductivelaboringoftheancientancestry. intheprimitivesociety,peoplehadtosurvivebygatheringingroups.theylivedonhuntingwithrocksandsticks.hittingwiththeirhands,kickingwiththeirfeetandcutting,choppingorstabbingwithsimpleweapons,theyperformedallkindsofmovements,whichdisplayedcertainskillsofdefenseorattacking.theseperformancesmadeupthesubstantialbackgroundofwushu. intheclankl?nsociety,thereoftenourredbattlesbetweenthetribes.armedforcesbecamethemeansofplundering.bows,arrows,castingstonesandotherrockyitemsappearedasweapons,beingimprovedgraduallyaordingtotheneedsoffight.whenhavingarest,especiallywhencelebratingtheirtriumphs,peopledancedtotheimitationsofdefendingandattackingmovements,stabbing,blowingandkicking.afterprolongedaumulation,theexperiencesbegantoberaisedtothelevelofconsciousness,hencewushucameintobeing. typeofgongfu中国武术的分类 chinesemartialartsconsistofanumberoffightingstylesthatweredevelopedoverthecenturies.thosefightingstylescanbeclassifiedaordingtomonthemesthatareidentifiedasfamilies(家),sects(派)orschools(门).stylesofchinesemartialartsalsocanbecategorizedasthenorthernstyleandthesouthernstyleaordingtothegeographicalregionsdividedbythehuangheriver. chineseloveformartialarts中国人的武侠情缘 chineseloveformartialartscanbereflectedinmanymartialartsnovelsandallkindsoffilmandtelevisionworks. theworksofjinyong,g