英语科技论文写作（三）

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1、英语科技论文写作（三）2008.4.正文_实验方法包括：实验目的；实验的研究对象、样本或材料：测试仪器仪表及测试系统(可用附图)；实验步骤；实验结果的收集方式和分析结果的方法。正文_实验方法时态的应用：一般现在时态：句子的内容是普遍的、不受时间影响的事实。如：标准实验设备设备的原理和功能标准实验程序正文_实验方法一般过去时态：句子的内容是特定的、过去的行为或事件。如：实验目的为满足实验工作的要求自行设计、制造或改造的设备实验步骤正文_实验方法语态的使用：描述试验方法和步骤的句子通常使用被动语态。描述实验设备的句子通常使用主动语态。

2、正文_实验方法例:Experimentalapparatusandprocedure（实验目的）Theobjectiveofthepresentexperimentwastoinvestigatetheheattransfercharacteristicsofflowingicewaterslurryinastraightpipe,andthusprovidefundamentalinformationforthenewicethermalenergystoragesystem.正文_实验方法（实验装置）Theschematicd

3、iagramofexperimentalapparatusisshowninFig.1.Theapparatusconsistedofatestsection,anicewaterslurrytank,ahotwatercirculatingloop,andassociatedmeasuringinstruments.Thetestsectionwasahorizontaldoubletubeheatexchangerof2,000mminlengthwithanentrancesectionof800mminlength.Ice

4、waterslurryflowedinaninsidetubeoftheheatexchangerandhotwatercirculatedinanannulargapbetweentheinsideandoutsidetubes.Inthisstudy,twokindsofheatexchangerwereused.Onewas…andtheotherwas….正文_实验方法（测试手段）Inthisstudy,icepackingfactor(IPF=volumeofice/volumeoficewaterslurry)ofic

5、ewaterslurryisaveryimportantfactor,soanIPFcontrollerandanIPFmeasuringdevicewereused.IPFcontroller,whichwasadoubletube,isshowninFig.2….FormeasuringIPFoficewaterslurry,theelectricconductivitymethodwaschoseninthisexperiment.Itisamethodusingaprinciplethat….Fig.3showsthede

6、tailoftheIPFmeasuringdevice….正文_实验方法Thevelocityoficewaterslurryinthetestsectionwascontrolledbyavortexpumpwithaninverter.Thermocouplesweresetinthetestsectiontomeasureboththeinletandoutlettemperatureoftheicewaterslurryandthehotwater….正文_实验方法（实验步骤）Theexperimentswereperfo

7、rmedusingthefollowingprocedure.Iceparticleweremixedwithwaterintheicewaterslurrytank.AftercontrolledIPFandvelocityoficewaterslurry,iswaspassedthroughthetestsectionandheatedbyhotwater.Theamountofmeltingheattransferredfromhotwatertoicewaterslurrywascalculatedwiththediffe

8、rencebetweentheinletandoutlettemperatureofhotwater.Inaddition,thebehavioroftheiceparticlespassedthroughthetestsectionwasreco