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1、EnglishforElectronicTechnologyPassageFourMicrowaveOvenUniteTwoElectronicProductsKeypoints:usefultermsandtheworkingprinciplesofmicrowaveovenDifficultpoints:describingthestructuresandworkingprocessesofamicrowaveovenLeadingin-RevisionTalkaboutrefrigeratorsMaincompo
2、nentsofarefrigeratorFunctionofeachcomponentLeadingin-Revision(watchandlisten)TVinRefrigeratorHowairconditioningwork?TalkaboutrefrigeratorMicrowaveOvenmicrowave[‘maikrəuweiv]n.微波oven['ʌvən]n.烤炉,烤箱Whenwasmicrowaveoveninvented?ThemicrowaveovenwasinventedbyAmericane
3、lectricalengineerPercySpencer(1894-1970)in1946.Dr.Spencerheld150patentsandwasconsideredoneoftheworld'sleadingexpertsinthefieldofmicrowaveenergy.Thefirstmicrowavewasabout5½feethigh,750poundsandsellingfor$5,000each.Whowastheinventor?Howweremicrowaveovensinvented?1
4、946duringaradar-relatedresearchprojectDr.PercySpencernoticedsomethingveryunusual.Hewastestinganewvacuumtubecalledamagnetronwhenhediscoveredthatthechocolatebarinhispockethadmelted.Laterheheldapackageofpopcornnearamagnetron,popcornexplodedalloverthelab.Spencerhadd
5、iscoveredthatyoucouldcookwithelectromagneticwaves.magnetron['mægnitrɔn]n.磁电管-tron是后缀，表示“真空管、电子管AParagraphfromTextThemicrowaveovenwasinventedinthelate1940sintheUS.DuringWorldWarII,microwavetechnologywasusedalotinradarequipment,sothetechnologywasadvanced.Afterthew
6、ar,scientistsusedtheknowledgethattheyhadofmicrowavestoinventthefirstmicrowaveoven.Infact,themicrowaveovenwascalleda"radaroven"atfirstbecauseofitshistory!Backthen,microwaveovensweresobigthatonlyrestaurantsandotherbusinessesusedthem.Aboutthefirsthome-usemicrowaveo
7、venInthe1960s,thefirsthome-usemicrowaveovenwasmadeinJapan.Inthosedays,onlyrichpeoplecouldaffordit,butnowadays,microwaveovensaremoreaffordableforpeopleinmanycountries.构词法-合成法（compounding）由两个或两个以上的词合成一个新词，或连字符连接，或直接连接在一起。home-useleftover waveguideturntable hardwar
8、efirmware家用残留物,剩饭n.波导管n.转车,转盘 五金器具n.(计算机)硬件n.固件Aboutthefirsthome-usemicrowaveovenFrominternetThefirstmicrowaveovendesignedforhomeusewasa24-inchoven,producedbytheTappa
