中国四大发明-英文PPT.ppt

ChinaAncientFourInventions中国四大发明,Compass,gunpowder,papermakingskillandtypography,isChinaancientfourinventions,itisoneofthesignsthatChinabecometotheancientcivilizedcountry,occupytheimportantpositioninthehistoryofhumancivilization.罗盘、火药、造纸术和印刷术,是中国古代四大发明,这是中国成为这古老文明的国家，占据在人类文明史上占有重要地位的标志之一。,1.CompassTheinventionofthecompassistheresultofChinaancientworkingpeopleknowtotheobjectmagnetisminthelong-termpractice.1。指南针指南针的发明是我国古代劳动人民长期实践中认识到物体的磁性的结果。,Becauseofproductivelabor,peoplehavefoundthecharacteristicofthemagnetpointingtodirection.Throughexperimentandresearchinmanyways,inventedtheCompassatlast.由于生产劳动,人们已经发现了磁铁的指出方向的特点,。通过试验和在许多方面的研究,发明了指南针。,TheCompassgiveplaytoimportantfunctioninthenavigationafterintroducingtoEurope.指南针在传入欧洲后，在导航上发挥了重要的作用,2.GunpowderThegunpowderismadeofniter,sulfurandcharcoalthreekindsofmaterialsmixing.2。火药火药是由硝石、硫和木炭三种原料混合制成的。,IntheTangDynasty,thegunpowderbeginstobeappliedtothemilitaryaffairs.Peopleutilizethethrowingstonemachine,lightthegunpowderbagandthrowout,burntheenemy,thisisthemostprimitivecannon.唐朝，火药开始应用到军事上。人们利用抛射石头的抛石机，把火药包点着以后，抛射出去，烧伤敌人，这是最原始的火炮。,3.PapermakingskillTheinventionofpapermakingskillisChinascontributiontothecivilizationoftheworld.3。造纸术造纸技术的发明，是中华民族对世界文明的杰出贡献之一。,IntheEasternHanDynasty(A.D.105),thepapermakingskillinventorCailunisonthebasisofthatforefathersweavesilksexperience,Havemadeintothevegetablefiberpaperwithbark,brokenfishingnetwork,rag,etc.rawmaterials.Fromthenon,paperbecometothematerialthatgenerallywrite.东汉和帝元兴元年(公元105年)，蔡伦在总结前人制造丝织晶的经验的基础上，发明了用树皮、破渔网、破布、麻头等作为原料，制造成了适合书写的植物纤维纸，才使纸成为人们普遍使用的书写材料。被称为“蔡侯纸”。,4.TypographyThetypographyisoneofthemostimportantfourinventionsinancientChina.4。印刷术印刷术是最重要的中国古代四大发明之一,ThewoodblockprintingappearinSuidynasty,itisthatcarveprotrudingBackwardChinesecharacteronwoodblockwithknife,thenbrushChineseink-liquid,printonthepaper.它开始于隋朝的雕版印刷，是用刀在一块块木板上雕刻成凸出来的反写字，然后再上墨，印到纸上。,Inaword,Chinaancientfourinventions,hasleftbehindamagnificentchapterinthehistoryofhumanscienceandculture.Thesegreatinventionsonceinfluencedandbenefitedthewholeworld,h