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n be used to accurately estimate theR-factor and its seasonal distribution with long termdaily rainfall data which are available in Malaysia, andelsewhere in the world.(摘引自《Journal of Soil and WaterConservation》2001)以上摘要共5句,涵盖了英文摘要上述四方面内容。第1句交待了论文研究的背景、目的和范围;第2、3句说明了研究的方法(有关数据的使用),两句动词均使用了一般过去时;第4句表明了研究的结果,动词使用了一般过去时;第5句是研究得出的结论。

 

2.被动语态的应用科技论文英文摘要另一显著特征是被动态的大量运用。摘要是科技工作者对所从事的科研活动客观的、浓缩的表述,强调或突出的是客观的科学事实、现象和过程而不是行为动作的执行者,因此被动语态就自然而然成为追求叙述客观和规范性的一个重要手段。例如:Asymptotic Solutions of Penny-Shaped Inhomo-geneities In Global Eshelby’s TensorIn this paper, a three-dimensional penny-shapedisotropic inhomogeneity surrounded by unbounded iso-tropic matrix in a uniform stress field is studied basedon Eshelby’s equivalent inclusion method. The solu-tion including the deduced equivalent eigenstrain andits asymptotic expressions is presented in tensorialform. The so-called energy-based equivalent inclusionmethod is introduced to remove the singularities of thesize and eigenstrain of the Eshelby’s equivalent inclu-sion of the penny-shaped inhomogeneity, and yield thesame energy distrubance. The size of the energy-basedequivalent inclusion can be used as a generic damagemeasurement.(摘引自《Journal of Applied Mechanics》2001)上文摘要共有4句,除了第3句and连接的第2个分句外,其余的谓动词均使用了被动语态。被动语态的使用,不仅省去了不必出现的行为主体(作者或研究者),而且更加突出了读者关心或感兴趣的信息:研究目的和范围、研究方法和结果以及研究得出的主要结论。值得指出的是,国外有些学术期刊和英文摘要也使用第一人称复数代词we来表示行为动作的主体。例如:Existence of a Solution and Variational Princi-ples for Vector Equilibrium ProblemsIn this paper, we prove an existence result for asolution to the vector equilibrium problems. Then, weestablish variational principles, that is, vector optimi-zation formulations of set-valued maps for vector equi-librium problems. A perturbation function is involvedin our variational principles. We prove also that the so-lution sets of our vector optimization problems of set-valued maps contain or coincide with the solution setsof vector equilibrium problems.(摘引自《Journal of Opti-mization Theory and Applications》2001)上述摘要只有4句,其中就有3个句子使用了主观性较强的人称代词we作主语。

3.以简单句为主,复合句为辅的句法特征英文摘要不同于一般的科技英语,写作时多采用简单句、少用复合句。这种句法特征体现了英文摘要简洁明晰、言简意赅的文体风格。例1:An Algorithm Constructing Solutions for a Fami-ly of Linear Semi-Infinite ProblemsA family of linear semi-infinite problems depend-ing on a parameterτ∈[0,τ*]is considered. For fixedτ=τ0∈[0,τ*],a sensitivity analysis of the problemsolution is carried out and rules constructing the solut-ions of this family forτin a right-side neighborhood ofτoare described. Results on the one-sided本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。