英语翻译Asthehorizonsofsciencehaveexpanded,twomaingroupsofscientistshaveemerged.Oneisthepurescientist;theother,theappliedscientist.Thepureortheoreticalscientistdoesoriginalresearchinordertounderstandthebasiclaws

　　英语翻译

　　Asthehorizonsofsciencehaveexpanded,twomaingroupsofscientistshaveemerged.Oneisthepurescientist;theother,theappliedscientist.

　　Thepureortheoreticalscientistdoesoriginalresearchinordertounderstandthebasiclawsofnaturethatgoverenourworld.Theappliedscientistadaptsthisknowledgetopracticalproblems.Neitherismoreimportantthantheother,however,forthetwogroupsareverymuchrelated.

　　Sometimes,however,theappliedscientistfindsthe"problems“forthetheoreticalscientisttoworkon.Let'stakeaparticularproblemoftheaircraftindustry:heat-resistantmetals.Manyofthemetalsandalloyswhichperformsatisfactorilyinacarcannotbeusedinajet-propelledplane.Newalloysmustbeused,becausethejetengineoperatesatamuchhighertemperaturethananautomobileengine.Theturbinewheelinaturbojetmustwithstandtemperaturesashighas1,600degreesFahrenheit,soaircraftdesignershadtoturntotheresearchmetallurgistforthedevelopmentofmetalsandalloysthatwoulddothejobinjet-propelledplanes.

　　Dividingscientistsintotwogroups-pureandapplied-isonlyonebroadwayofclassifyingthem,however.Whenscientificknowledgewasverylimited,therewasnoneedformentospecialize.Today,withthegreatbodyofscientificknowledge,scientistsspecializeinmanydifferentfields.Withineachfield,thereisevenfurthersubdivision.And,withfinerandfinersubdivisions,thevariousscienceshavebecomemoreandmoreinterrelateduntilnoonebranchisentirelyindependentoftheothers.Manynewspecialties-geophysicsandbiochemistry,forexample-haveresultedfromcombiningtheknowledgeoftwoormoresciences.