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SSS 2009-11-11

时间:2010-05-19 03:00来源:互联网 提供网友:mark@li   字体: [ ]
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    (单词翻译:双击或拖选)

“This book stinks1!” is really a bad review. But even a classic work can start to smell when it gets old enough. Now chemists have developed a technique that identifies what kind of degradation2 process an old book or historical document is going through, based on the odors it gives off. The report appears in the American Chemical Society journal Analytical3 Chemistry.

 

An old book’s familiar musty smell is due to hundreds of different volatile4 organic compounds gassing out from the paper and other materials, such as the binding5. The particular blend of compounds results from specific degradation pathways. Conventional analysis techniques require small samples of the work for testing, further damaging the book. But analyzing6 the gases coming off the old books is noninvasive.

 

The researchers identified 15 organic compounds that make good markers to track the condition of books. They note that their system could be used to evaluate the type of document, its present condition and its likely future, thus helping7 preservationists map a strategy to save historical works.

 


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1 stinks 6254e99acfa1f76e5581ffe6c369f803     
v.散发出恶臭( stink的第三人称单数 );发臭味;名声臭;糟透
参考例句:
  • The whole scheme stinks to high heaven—don't get involved in it. 整件事十分卑鄙龌龊——可别陷了进去。 来自《简明英汉词典》
  • The soup stinks of garlic. 这汤有大蒜气味。 来自《现代英汉综合大词典》
2 degradation QxKxL     
n.降级;低落;退化;陵削;降解;衰变
参考例句:
  • There are serious problems of land degradation in some arid zones.在一些干旱地带存在严重的土地退化问题。
  • Gambling is always coupled with degradation.赌博总是与堕落相联系。
3 analytical lLMyS     
adj.分析的;用分析法的
参考例句:
  • I have an analytical approach to every survey.对每项调查我都采用分析方法。
  • As a result,analytical data obtained by analysts were often in disagreement.结果各个分析家所得的分析数据常常不一致。
4 volatile tLQzQ     
adj.反复无常的,挥发性的,稍纵即逝的,脾气火爆的;n.挥发性物质
参考例句:
  • With the markets being so volatile,investments are at great risk.由于市场那么变化不定,投资冒着很大的风险。
  • His character was weak and volatile.他这个人意志薄弱,喜怒无常。
5 binding 2yEzWb     
有约束力的,有效的,应遵守的
参考例句:
  • The contract was not signed and has no binding force. 合同没有签署因而没有约束力。
  • Both sides have agreed that the arbitration will be binding. 双方都赞同仲裁具有约束力。
6 analyzing be408cc8d92ec310bb6260bc127c162b     
v.分析;分析( analyze的现在分词 );分解;解释;对…进行心理分析n.分析
参考例句:
  • Analyzing the date of some socialist countries presents even greater problem s. 分析某些社会主义国家的统计数据,暴露出的问题甚至更大。 来自辞典例句
  • He undoubtedly was not far off the mark in analyzing its predictions. 当然,他对其预测所作的分析倒也八九不离十。 来自辞典例句
7 helping 2rGzDc     
n.食物的一份&adj.帮助人的,辅助的
参考例句:
  • The poor children regularly pony up for a second helping of my hamburger. 那些可怜的孩子们总是要求我把我的汉堡包再给他们一份。
  • By doing this, they may at times be helping to restore competition. 这样一来, 他在某些时候,有助于竞争的加强。
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