学术英语教程-部分答案

1P43UNIT7(makingmoreconcise)1.AfterwehaveHavingcarriedthroughtheformulismofLagrangemultipliersfor27variableswith18equationsofconstraints,weobtaintheequationsofthreemajoraxes.2.Theyproposedthatthefactoryshouldbefined,finingthatfactoryforithasseriouslypollutedtheriversnearby.3.Afteritisbeingboiled,waterreadilygivesoffwatervapor.4.Weclearlyobservestheenhancement,andnumericallyanalyzedtheangular-distributionmomentsoftheconstantandfoundfindingthattheenhancementisconstant.5.Wewanttominimizefriction,soweshouldgreasethemetallicsurface.6.Thewateriscooledsothatitcantobeusedinthecondenser.7.Thematerialthatwearegoingtobeusedisagoodconductor.8.SuppliesofrubberwhichRubbersupplieswererequiredbyindustrycamefromfaraway.9.TheresearchthatisnowbeingcarriedoutinNMRimagingisextensiveandmeaningful.10.Theplanewhichisflyingatanaltitudeof2140metersissubjectedtopressuresof80kilometerspersquaremeter.11.Thescrewrevolvedonce,anditraiseraisingtheloadby30mm.12.Thecontractorsareresponsibleforthedamage,sincetheyhavinginstalledthemachinery.13.IftheyareGivenachance,thehegemonieswouldstageacomeback.14.Itismystrongdesireistojoininyourwork,inthehopehopingthatwillbeinthefieldofmirrortheory.15.Herespondedinahastymanner.Hastily.P501.Inthisformula,wehaveneglectedthefrictionlossescausedbyfriction.2.Webegantheexperiment,andhopedthattheexperimentcouldbesuccessful,hopefulofsuccess.3.ConnectMtoNbyusinggears.MisgearedtoN.4.Thegoodswillbetransportedbymeansoftrucked.5.Ifwehavehavingnofaith,wecandonothing.6.Electromagneticwaves,thoughtheyareinvisibletooureyes,doexistinspace,andrevealthesamespeedaslightwaves.7.Threecolors-----red,green,andblue----will,iftheyaremixedtogetherintherightproportionproperly,giveuswhitelight.8.Whenyouaremakingsomething,youhavetochoosethemostsuitablematerialforthepurpose.9.Sincethefirsttestoftheatomicbombtheworldhaslearntthattheatomcanbesplitanditspowercanbeused.10.Onesideofthemovingroadwilltravelinonedirection,theothersidewilltravelinthe2oppositedirection.11.Velocitycarriedtheideaofdirection,butspeeddoesnotcarrytheideaofdirection.12.Theywerefastenedtogetherwithstaplesstapled.