科技英语

作者简介

《科技英语》旨在帮助学生开拓科普视野、熟悉科技文体、增加科技词汇量，进一步提高学生的阅读理解和综合分析能力，实现从大学基础英语阅读阶段到专业英语阅读阶段的过渡。科技英语具有丰富的词汇、独特的语法结构和专业上通用的表达方式，学习科技英语是对大学基础英语的补充和提高，也是学生开阔视野、直接了解世界范围内专业前沿知识和技术发展现状的必要途径。通过学习，了解掌握科技英语的表达方式和表达方法在英语中的具体体现，为高年级学生阅读专业英语文献和原著打下一个良好基础。

书籍目录

Unit 1  Air Fit to Breathe　[ Reading material]   Recycling the WorldUnit 2  Chemical Equations and Formulas　[ Reading material ]  History of ChemistryUnit 3  Detergent　[ Reading material ]   Numbers in Physical QuantitiesUnit 4  Conductivity without Metals　[ Reading material]   Units of MeasurementUnit 5  Applications of Electrolysis　[ Reading material ]   Nomenclature of Inorganic CompoundsUnit 6  All Shapes and Sizes　[ Reading material]   Nomenclature for Organic Compounds and Groups ..Unit 7  The Global Warmers　[ Reading material ]   Origin of the Gene BanksUnit 8  Traffic Technology Drives to Clear the Road　[ Reading material ]   Facts in the Development'of TransportationUnit 9  GM Organisms－Is GM the Future?　[ Reading material ]   Genetic ModificationUnit 10  Climate Change　[ Reading material]   HurricanesUnit 11  Pesticides and Pest Control　[ Reading material ]   Clean ProductionUnit 12  Energy　[ Reading material ]   The Future of Clean CoalUnit 13  Carbon Capture Strategy Could Lead To Emission-free Cars　[ Reading material ]   Food Containers Leach a Potentially Harmful ChemicalUnit 14  Spy Satellite　[ Reading material ]   A Review of the U.S. Missile Defence SystemUnit 15  America's Wetlands (1)　[ Reading material]   America's Wetlands (2)Unit 16  Creating Molecules and Materials by Design (1)　[Reading material]   Creating Molecules and Materials by Design (2)Appendix 1  科技英语词汇构成及解释Appendix 2　科技英语常用前缀和后缀

章节摘录

　　Unit 3　　Detergent　　Detergent is a material that increases the cleaning effect of water on soiled objects.There are also non-aqueous detergents that enhance the cleaning power of organicsolvents；for example，they are used in dry cleaning and in engine oils to prevent dirtand gummy decomposition products from depositing on the metal.However，thislesson will discuss only those detergents that are effective in water.　　Composition：Detergents vary in composition，depending on the cleaning task forwhich they are tended.Those that are used for laundering usually contain several basickinds of ingredients.There are surface active agents，or surfactants，which aresubstances that greatly lower the surface tension of water.This physical effect isimportant in detergency，and many surfactants are effective detergents by themselves.There are also builder，which，are generally inorganic salts or alkalis that enhance thecleaning action of the surfactant，although they themselves may not be good detergents.Detergents may also contain auxiliary components that impart special performancecharacteristics to the material.

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