國際學(xué)術(shù)交流英語_講稿以及問答_pm2.5

1、Mningladiesgentlemen，itisagreathonfmetobeheretodomypresentationtodayIwanttosaysomethingaboutairpollutionPM2.5.AsthebeginningofmypresentationI’llshowseveralpicturesoffoggycities.CanyouguesswhereisthispicturetakenfromYesit

2、’stheientalPearlinShanghai.thisplaceisthePalaceMuseuminBeijing.Thispictureisnobetterthanthefmertwo.Oklet’scomebacktomytheme.There’refourpartsinmypresentation.FirstIwillintroducesomethingofPM2.5.ThenI’lltellyouhowPM2.5doe

3、sharmtouswhatwecandotoprotectusfromit.Thelastbutthemostimptantiswhatweneeddotocontrolthepollution.DoyouknowhowsmallthePM2.5isLookatthispicturethisisthefinebeachsitsdiameterisabout90micrometersthisisapieceofhumanhairthebl

4、ueballisPM10theredballisPM2.5.FromthepicturewecandrawtheconclusionthatthediameterofPM10isonefifthofhair’sPM2.5isonefthofPM10thenyoucanimaginehowsmallthePM2.5is.SoscientistsusuallyusePM2.5toshowthecontentofparticulateinpe

5、rcubicmeterofair.Thehighertheindexisthemeharmfultopeople.ThismapshowsthePM2.5alloverthewldonthemaptheheaviestpollutedareasarelocatedinthentheastpartofChina.Ifyouwanttoknowmeaboutthedetailslookatthismap.UnftunatelyJinanis

6、listedasoneoftheheaviestpollutedcitiesinChina.ThenwhereisPM2.5fromIthinkthereare4mainresources.?Dailypowergeneration?Industrialproduction?Automotiveexhaustemission?DustontheconstructionsitesHowdoesPM2.5doseharmtousItdoes

7、harmtoourrespiratysystemcardiovularsystem.IfyouareexposedinhighdensityofPM2.5thatmaycauseDNAdamageincreasetheriskoflungcancer.SowhenitcomestoprotectionweshouldwearPM2.5mouthmufflechoosespublictransptsmokelessdon’tsmokedo

8、n’texerciseinfogdaymning.ToreducethedensityofPM2.5thefundamentalmeasuresareasfollows:?Controlthepollutionsource?Planting?Usingthemonitingwk?SettingsprayequipmentIhopethatin10years20yearsourskywillbelikethis.Thankyoufyour

9、attention~Q：如果沒有人為的空氣污染，那么在空氣中的PM2.5濃度是多少啊IfthereisnopollutionwhatistheconcentrationofPM2.5A：即使沒有人為污染，空氣中也有一定濃度的PM2.5.這個(gè)濃度稱為背景濃度。大約是35微克每立方米EvenifthereisnomanmadepollutionalsohaveacertaindensityofPM2.5intheair.Theconcent

10、rationiscalledbackground。Itisabout3to5milligramspercubicmeterQ:從我們的專業(yè)角度講，我們能做什么？對于一些大城市出現(xiàn)的汽車限購政策，你認(rèn)為是一個(gè)好的措施嗎？Fromthepointofviewofprofessionalwhatcanwedofthepm2.5problem？Doyouthinktherestrictionpolicyofautomobileinmanycit

11、iesisagoodmeasure？A：從一定程度上可以減少排放量，是一個(gè)措施，但不一定是適合所有城市。Weshoulddevelopadvancedenginetechnologyaftertreatmenttechniquetoreducethepm2.5emission.Q：DistinguishedProfessLidoyouthinkwecancontrolthepm2.5pollutionsuccessfullyA:NoQ：