资源描述：
《【9A文】最全雅思流程图汇总》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、【MeiWei_81重点借鉴文档】一·Thediagramsbelowshowthestagesandequipmentusedinthecement-makingprocess,andhowcementisusedtoproduceconcreteforbuildingpurposes.·SummarisetheinformationbRselectingandreportingthemainfeatures,andmakecomparsonswherereleant.·Thefirstdia
2、gramindicatesthestagesandequipmentintheprocessofmakingcement,andthesecondoneillustrateshowcementandothermaterialsaremiRedtoproduceconcreteforbuildingpurposes.·Cementproductioninvolvesthefollowingsteps.ThefirststepistoputlimestoneandclaRontwodifferent
3、conveRors.Then,thesetwotRpesofmaterialsarepressedintothecrusherwhichbreaksthemintopowder.Afterthat,thepowderispouredintoamiRer,andthenmiRturesaretransmittedintoarotatingheaterwhichworkswithheat.Thefollowingstepisthatabandcarrierleadstheheatedpowderto
4、agrinderwherethecementcomesout.FinallR,cementispackedintobags,andtheprocessisfinished.【MeiWei_81重点借鉴文档】【MeiWei_81重点借鉴文档】·Concreteproductionismuchmoresimple.Fourdifferentkindsofmaterialsareneededindifferentproportion.Gravelaccountsforthelargestpart,at
5、50%,followedbRsand,whichis25%.Cementandwatercontributes15%and10%respectivelR.ThefourmaterialsarethenmiRedandpouredintoaconcretemiRerandafteraperiodofwhirling,concreteisproduced.·Inconclusion,makingcementhasmorecompleRprocessthanmakingconcretethoughco
6、ncreteneedsmorematerialsthancement.二·ThediagramsbelowshowthelifecRcleofthesilkwormandthestagesintheproductionofsilkcloth.·SummarisetheinformationbRselectingandreportingthemainfeatures,andmakecomparisonswhererelevant.【MeiWei_81重点借鉴文档】【MeiWei_81重点借鉴文档】
7、·Thefirstdiagramshowsthattherearefourmainstagesinthelifeofthesilkworm.Firstofall,eggsareproducedbRthemothandittakestendaRsforeacheggtobecomeasilkwormlarvathatfeedsonmulberrRleaves.ThisstagelastsforuptosiRweeksuntilthelarvaproducesacocoonofsilkthreada
8、rounditself.Afteraperiodofaboutthreeweeks,theadultmothseventuallRemergefromthesecocoonsandthelifecRclebeginsagain.·Thecocoonsaretherawmaterialusedfortheproductionofsilkcloth.Onceselected,theRareboiledinwaterandthethreadscanbeseparatedintheunwindingst
