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美国科学60秒 SSS 2012-11-06

时间:2013-06-20 07:38来源:互联网 提供网友:gmeng   字体: [ ]
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    (单词翻译:双击或拖选)

 Getting out grandma’s good [flat work] for the holidays? Then you’re probably dreading1 the time it takes to polish up that silver.

 
Now imagine you’re in charge of the silver collection at the metropolitan2 museum of art. Fortunately, for art conservators everywhere, scientists are hard to work on the process that may help keep silver shining and with a lot less elbow grease. 
 
Researchers at the University of Maryland college park, together with the [Waltras] Art Museum in Baltimore, are using nanotechnology to prevent that nasty sulfite tarnish3 from forming. The method called atomic-level deposition4 coats silver objects with a protective [orksite] film in layers just a single atom thick. Researchers discussed it at the recent 2012 AVS International Symposium5, witch covers materials, interfaces6 and processing.
 
The technique is still being worked out and hasn’t yet been used on priceless works of art. But researchers say that it offers a number of advantages over current methods. For one thing, conventional polishing can actually remove underlying7 silver. 

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1 dreading dreading     
v.害怕,恐惧,担心( dread的现在分词 )
参考例句:
  • She was dreading having to broach the subject of money to her father. 她正在为不得不向父亲提出钱的事犯愁。
  • This was the moment he had been dreading. 这是他一直最担心的时刻。
2 metropolitan mCyxZ     
adj.大城市的,大都会的
参考例句:
  • Metropolitan buildings become taller than ever.大城市的建筑变得比以前更高。
  • Metropolitan residents are used to fast rhythm.大都市的居民习惯于快节奏。
3 tarnish hqpy6     
n.晦暗,污点;vt.使失去光泽;玷污
参考例句:
  • The affair could tarnish the reputation of the prime minister.这一事件可能有损首相的名誉。
  • Stainless steel products won't tarnish.不锈钢产品不会失去光泽。
4 deposition MwOx4     
n.免职,罢官;作证;沉淀;沉淀物
参考例句:
  • It was this issue which led to the deposition of the king.正是这件事导致了国王被废黜。
  • This leads to calcium deposition in the blood-vessels.这导致钙在血管中沉积。
5 symposium 8r6wZ     
n.讨论会,专题报告会;专题论文集
参考例句:
  • What have you learned from the symposium?你参加了这次科学讨论会有什么体会?
  • The specialists and scholars present at the symposium come from all corners of the country.出席研讨会的专家学者们来自全国各地。
6 interfaces ad63a35ea2ac8a42233e5ac6cb325d34     
界面( interface的名词复数 ); 接口(连接两装置的电路,可使数据从一种代码转换成另一种代码); 交界; 联系
参考例句:
  • If the class needs to be reprogrammed, new interfaces are created. 如果class需要重新程序设计,新的interfaces创建。
  • Interfaces solve this problem of evolving code. Interfaces解决了代码升级的问题。
7 underlying 5fyz8c     
adj.在下面的,含蓄的,潜在的
参考例句:
  • The underlying theme of the novel is very serious.小说隐含的主题是十分严肃的。
  • This word has its underlying meaning.这个单词有它潜在的含义。
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TAG标签:   美国60秒科学  SSS  英语听力
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