英语科技论文常用句型结构

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1、英语科技论文常用句型结构2.6.1表达不同功能的常用句型1)定义定义是对一事物的本质特征或一个概念的内涵与外延的确切简要的说明，常见的表达方式和句型有：Thetermmacromolecule(means..・、sinnifies...isconsideredtobe..・、istakenlobe・・・、refersto...)(Inthisarticle.Inthispaper、Inthisessay、InthiscontextsIncomputerscience、Forthispurpose)network(will

2、betakentomean...、willbeusedinthe、willbeconsideredtobe・・・、willreferto...、willbeusedin...)为了说明上述表达方式的用法，现举例如下：Paradigmreferstomodelsofinquirythatguidesscientificwork.在对某些事物进行定义吋，还可使用以下固定形式。(thewordstobedefined)isakindof(class)which(distinguishingfea(ures)从以上例子中可以看出

3、，一般定义的组成部分是：概念+属性+种差，例如：Asolarcell(概念)isadevice(属性)whichconvertstheenergyofsunlightintoelectricenergy(种差)。2)分类在科技论文中，作者有时需要对描述、说明的对象按其性质、大小、作用等分成若干种类，然后依次阐述。常见的表达分类的句型有：(breakdown、divide.subdivide、beclassified)+..・(总体)+into/as..・(部分)具体用法举例如下：・Classificationbreaks

4、downthegeneraltopicintoitsrelatedpartsinalogicalway.・Thisclassificationsystemdividedcarbidesintotwodistinctcategories・・Substancescaii/maybeclassifiedasgases,liquidsandsolids.Themodels(fallinto、canbedividedinto、maybeclassifiedintOsareof)two(major、general(groupsscl

5、asses、categories)xbroad)Therearetwo(majorsgeneral(groups^classesof..・.categories)xbroad)Tvvo(major>general(groups、classescategories)broad)Therearetwo(major、general(groupsxclassesxcategories)^broad)of...3)比例关系常见表达比例关系的句型有：・Mostobjectsarcbiginproportiontothesizeofa

6、natombutsmallinproportiontothesizeofthesun.・Therationbetweenstudentsofsciencetostudentsofengineeringis3:2.・Thereisarelationshipbetweenthecross-sectionalareaof*aropeanditsstrength.Itsstrengthisdirectlyproportionaltoitscross-sectionalarea・・Pressureisinverselypropor

7、tionaltovolume.・Airandfuelaremixedinaproportionof15to1.・Threecolours:red,greenandbluewill,iftheyaremixedtogetherintherightproportion,giveuswhitelight.・Ionthefinalprintedversion,graphsanddiagramsareusuallyreducedinscalebyafactoroftwoorthree・・Themodelismadetoscale.

8、・Asthedemandforpowerincreases,thesupplyisproportionallyincreased・・Agoodcoolantistormedbymixingwaterandsolubleoilinaratioof10:1to20:1.・Theaccelerationofabodyisd