专业英语作业.docx

专业英语作业

第一篇：专业英语作业原文章：GC／MS法测定干姜挥发油化学成分摘要目的分离鉴定干姜[Zingiberofficinale(Willd．)Rosc．]挥发油成分。方法用气相色谱一质谱(GC／MS)联用技术，应用峰面积归一化法测定各组分的相对含量。结果共测定出57种化合物，占挥发油总量的88．06％，主要为烯及萜类化合物。结论本实验方法可靠，重现性好，能掌握干姜的内在质量特征，为藏药合理利用干姜提供一定的科学依据。我的英文翻译：Tilte：ByGC-MSmethodtoassaythevolatileoilofZingiberofficinale(Willd．)RoscAbstract:Objective:separateandidentifythevolatileoilofZingiberofficinale(Willd．)Rosc.Method:ByGC-MSandconandareasofpeaknormalizationmethodtomeasuretherelativecontentofeachcomponent.Result:totally57typeofcompoundhadbeenmeasured,excluding88．06％ofthevolatileoilofZingiberofficinale(Willd．)Rosc,andalmostofitarealkenylcompoundandterpenoid.Conclusion:themethodofthisexperimentisreliableandreproducible,alsocouldmastertheinnercharacteristicstousetheZANGmedicineproperlyandscience-based.作者的翻译AbstractObjectiveToanalyzethechemicalconstituentsofvolatileoilfromZingiberofficinale．MethodsTheconstituentsofvolatileoilfromZingiberofficinale．wasanalyzedbytechnologyofGC／MS．Results57conpoundsweregotandidentifiedinthevolatileoil．whichaccountedfor88．06％ofvolatileoil．themajorchemicalcompoundsinthevolatileoilwerealkeneandterpenes．ConclusionThismethodiSreliable．stableandrepeatable．thedatacanprovidescientificbasesforresearchofZingiberOmcinale．第二篇：专业英语作业城市与环境科学学院地理科学专业2班曹文花学号：2011210064SummaryPopulationsandwaysofsustainingthemarenotinbalance,andthetrendistowardgreaterimbalanceratherthanequilibrium.Malthusianthinkthepopulationisincreasinginageometricalrate,whilesubstanceincreasesinaarithmeticalrate.Naturewillreestablishabalancebetweenresourcesandpopulationnumbers.Malthuswrotefromthestandpointofthepropertiedclass.Hehadalowopinionofthe“lowerclasses”,andhisessayisfullofexpressionsofdisdainandopprobiumtowardthepoor.SomeofMalthus’shypothesisiscorrect,somearestillremainedteste.However,EsterBoseruparguedthatpopulationdeterminesagriculturalmethods,shethink“necessityisthemotherofinvention”,humanswouldalwaysfindwaystosupportthemselves.AllanhavemanyideasagreewithBoserup,Hedevisedamethodofdetermininghowmanyhistoricalchan