科技英语写作.doc

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1、科技英语写作数词分数：Eightninths九分之八；threefifths五分之三；seventenths十分之七；oneseventh七分之一；onefourth/aquarter四分之一；one/ahalf二分之一小数:afewtenths零点几（十分之几）；afewhundredths零点零几（百分之几）；afewthousandths零点零零几（千分之几）；afewmillionths百万分之几表示：分数表示法+ofa/an+单位（单数形式）例：sevenpartspermillion=sevenpartsin10的6次方百万分之七Three

2、partsperthousand=threepartsin10的3次方千分之三Athirdpartin10的6次方百万分之三Aseventhpartin10的3次方千分之七翻译：1.这只是汽化热的千分之几译：Thisisonlyafewthousandthsoftheheatofvaporization.2.这药丸重零点零几克。译：Thispillweighsafewhundredthsofagram.3.要使Vbe变化零点零几伏，就可以使基极电流发生明显的变化。译：ByvaryingVbeonlyafewhundredthsofavolt,theba

3、securrentcanbechangedsignificantly.4.输出是输入的100倍。译：Theoutputis100timestheinput.5.其速度为光速的3/10。译：Itsspeedisthreetenthsthatoflight.6.施加在该物体上的力为原来的2/5。译：Theforceexertedonthebodyistwofifthswhatitwas.7.这只箱子比那只重5倍。译：Thisboxissixtimesheavierthanthatone.8.该数值几乎比理想值大了3.5倍。译：Thisvalueisnear

4、ly4.5timesgreaterthantheidealone.9.这个音符的波长比在空气中同一音符长了两倍多。译：Thewavelengthofthismusicalnoteisoverthreetimeslongerthanthatofthesamenoteinair.练习1.该电路中的电流为电源的短路电流的一半。Thecurrentinthecircuitisonehalftheshort-circuitcurrentofthesource.2.这种蓄电池的内阻仅为零点零零几欧姆。Theinternalresistanceofthiskindo

5、fstoragebatteryisonlyafewthousandthsofanohm.3.其误差为6/1012.Itserrorissixpartsin1012.4.这台计算机储存的信息比那台多3倍。Thiscomputerstoresfourtimesmoreinformationthanthatone(does).5.月球的质量为地球的1/81。Themassofthemoonis1/81thatoftheearth.6.不久的将来对这种设备的需求量将为现在的20倍。Thedemandforthiskindofequipmentinthenear

6、futurewillbe20timeswhatitis.7.这个元件上的电压为零点几伏特。Thevoltageacrossthiscomponentisafewtenthsofavolt.8.现在其内部的压力是原来的1/3。Nowitsinternalpressureisonethirdwhatitwas.冠词练习一、1.Therehasbeen__an___evergreaterinterestinthissubject.2.Thepowerratingisthemaximumpowertheresistorcansafelydissipatewit

7、houttoogreat___a__riseintemperature.3.Itsprimarydisadvantageis_an____increaseinnoise.4._The____successfuldesignoftheequipmentrequires__a__detailedknowledgeoftheperformancespecifications.5.In_the____Bohrmodelofthehydrogenatom,__a___singleelectronrevolvesaround_a_singleprotoninaci

8、rcleofradiusR.6.Theunitoffrequencyis_the____her