最全雅思流程图汇总.doc

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一
Thediagramsbelowshowthestagesandequipmentusedinthecement—makingprocess,andhowcementisusedtoproduceconcreteforbuildingpurposes。
Summarisetheinformationbyselectingandreportingthemainfeatures,andmakecomparsonswherereleant。
Thefirstdiagramindicatesthestagesandequipmentintheprocessofmakingcement,andthesecondoneillustrateshowcementandothermaterialsaremixedtoproduceconcreteforbuildingpurposes.
。Then,thesetwotypesofmaterialsarepressedintothecrusherwhichbreaksthemintopowder.
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 Afterthat,thepowderispouredintoamixer,,cementispackedintobags,andtheprocessisfinished。
Concreteproductionismuchmoresimple。Fourdifferentkindsofmaterialsareneededindifferentproportion。Gravelaccountsforthelargestpart,at50%,followedbysand,whichis25%。Cementandwatercontributes15%and10%,concreteisproduced。
Inconclusion,makingcementhasmorecomplexprocessthanmakingconcretethoughconcreteneedsmorematerialsthancement.
二
Thediagramsbelowshowthelifecycleofthesilkwormandthestagesintheproductionofsilkcloth.
Summarisetheinformationbyselectingandreportingthemainfeatures,andmakecomparisonswhererelevant。
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,。Afteraperiodofaboutthreeweeks,theadultmothseventuallyemergefromthesecocoonsandthelifecyclebeginsagain。
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,,whichmeanstheycanbetwistedtogether,dyedandthenusedtoproduceclothintheweavingstage.
Overall,thediagramsshowthatthecocoonstageofthesilkwormcanbeusedtoproducesilkcloththroughaverysimpleprocess。
三
Theflowchartbelowshowshowchewinggumismade。 
Summarisetheinformationbyselectingandreportingthemainfeaturesandmakecomparisonswhererelevant。
。,thegumispassedintoanothercontainer/placeandthedesiredflavorings,sweetenersandsoftenersareaddedThismixtureisblendeduntilalloftheingredientsaremixedtogether。Thegumthentravels/passestoadifferentmachinewhichusesrollerstoflattenoutthegum。Finallythethinsheetsofgumarecutintorectangularshapesandbrokenintoseparatepiecesthenthegumpasses/travelsalongaconveyorbeltwhereitisenclosedinpackagingreadyfordistribution。
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Thediagrambelowshowshowfruitiscanned. 
Summarisetheinformationbyselectingandreportingthemainfeaturesandmakecomparisonswhererelevant。
Thediagramshowstheprocessofcanningfreshfruit。。Atthecannerythefruitiswashedandqualitychecked,。Whenitisreadyforcanningthefruitisweighedandgraded。。,,labelsareattachedandtheyareplacedintostorages。Thecannedfruitisnowreadytobedespatchedtosupermarketsandsold.
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Thediagrambelowshowstheprocessofmakingchocolate。 
Summarisetheinformationbyselectingandreportingthemainfeaturesandmakecomparisonswhererelevant。
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Chocolate’svariedflavours,colours,shapesandtexturesresultfromdifferentrecipetraditions。Whichhaveevolvedindifferentpartsoftheworld。Theessentialingredientinallchocolateiscocoa,whichismadefromthecream-,whichgrowsinequatorialregionssuchasSouthAmerica,AfricaandIndonesiaproducesafruitaboutthesizeofasmallpineapple,Insidewhicharethetree’sseeds。 
Afterharvesting,。Theshellsarethenremovedandthebeansaregroundintochocolateliquor-(cocoabutter),whichisremovedbyusingpresses。Thesolidblockofcocoathatremainsisthenmadeintoapowderwhichcanbeusedtomakeahotchocolatedrink,orismixedbackwithsomeofthecocoabutter,sugarandotherflavoursuchasvanillatomakethedifferentkindsofchocolate。
六
Thediagrambelowshowstheprocessbywhichbricksaremanufacturedforthebuildingindustry.
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Summarisetheinformationbyselectingandreportingthemainfeatures,andmakecomparisonswhererelevant.
Theprocessbywhichbricksaremanufacturedforthebuildingindustrycanbeoutlinedinsevenconsecutivesteps。 
Firsttherawmaterial,clay,whichliesjustbelowthesurfaceofsoilincertainclay—richareashastobedugupbyadigger。 
Thenthelumpsofclayareplacedonametalgrid,inordertobreakupthebigchunksofclayintomuchsmallerones,whichfallthroughthemetalgridontoaroller,,whichistheneitherformedinmouldsorcutintobrick-shapedpiecesbymeansofawirecutter。
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Thesefreshbricksarethenkeptinadryingovenforatleast24andamaximumof48hours,severaldozensifnothundredsofbricksatatime。Thedriedbricksarethentransferredtoaalso—calledkiln,anothertypeofhightemperatureof200℃-980℃,thenatahightemperatureof870℃-1300℃。Thisprocessisfollowedbycoolingdownthefinishedbricksfor48to72hoursinacoolingchamber. 
Oncethebrickshavebeencooleddownandhavebecomehard,theygetpackagedanddeliveredtotheirfinaldestination,beitabuildingsiteorstorage。 
七
Thediagramsbelowshowtheprocessofhowuraniumisusedintheproductionofnuclearpower. 
Summarisetheinformationbyselectingandreportingthemainfeaturesandmakecomparisonswhererelevant.
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Thisdiagramdescribeshowuraniumismined,processed,usedandthendiscarded。 
Uraniumisfoundunderthegroundandsoitmustbemined。Oncethemineduraniumhasbeenextracted,itistakentoaprocessingcentre。,theuraniumischangedintoagasandenrichedbeforeitisreformedasU-235fuelpellets。 
。Someoftheusedfuelcanbere-processedandre