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科技人员科技英语写作班练习题和测验题

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lysis.III.1.Thispolicecarisequippedwithareceiverthesizeofawatch.2.attractsironmaterials,afamiliarphenomenon.3.Ifthisrelationweretohold,wewouldhaveanegativecurrent,animpossiblesituation.4.Thecurrentinacircuitisproportionaltotheappliedvoltage,something[afact]thatwasverifiedexperimentallybyOhm.5.Averyeffectiveseparationmethod,chromatographyhasfoundwideapplications.6.Aninstrumentformeasuringcurrent,voltage,andresistance,themultimeteriswidelyusedinelectricalengineering.IV.1.Wemusttaketheeffectoftemperatureon[upon]ount.2.Inthiscase,thevariationofoutputwithinputisverysmall.3.Thiscurveshowsthedependenceofdistanceon[upon]speed.4.Theuseoftheatomicenergyasthesourceofpowerisveryimportant.5.Theseparationofimpuritiesfromtheoreisverydifficult.6.Weareallfamiliarwiththedefinitionofcurrentastheflowofcharge.

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