英语翻译This is the VOA Special English Economics Report.Few people had ever heard of the natural elements known as rare earth metals before a recent dispute between China and Japan.Yet these metals are used in devices like smartphones,flat scree
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英语翻译This is the VOA Special English Economics Report.Few people had ever heard of the natural elements known as rare earth metals before a recent dispute between China and Japan.Yet these metals are used in devices like smartphones,flat scree
英语翻译
This is the VOA Special English Economics Report.
Few people had ever heard of the natural elements known as rare earth metals before a recent dispute between China and Japan.Yet these metals are used in devices like smartphones,flat screens,hybrid car batteries,MP3 players and military equipment.In September,Japan detained a Chinese ship captain near disputed islands in the East China Sea.China denied that it stopped exports of rare earth metals to Japan to force his release.But the incident raised concerns.Japan is the world's biggest importer of rare earths.And China produces ninety seven percent of the world supply.China says it sold almost four billion dollars' worth in two thousand eight.But marketing professor George Haley at the University of New Haven in Connecticut says China has always kept prices low.GEORGE HALEY:"So unlike other minerals,the price of rare earth elements,after the nineteen eighties when they started production,has actually fallen."Some countries with rare earth metals no longer mine them -- including the United States.One reason is the low-cost imports from China.Another reason is concerns about environmental damage .So what are these rare earth metals?Well,most of them are not rare; that is just their name.Several are more common than copper,lead or silver.People who remember the periodic table of the elements from chemistry class might recognize them.Rare earths include the fifteen lanthanide metals along with yttrium and scandium.Samuel Bader,a physicist at the Argonne National Laboratory near Chicago,says rare earths are often found together.SAMUEL BADER:"They all have similar chemical properties.Once you do find them,they are very difficult to separate from each other."But Mr.Bader explains that the same properties that make them hard to refine also make them valuable.SAMUEL BADER:"Rare earth metals provide the world's strongest commercial magnets.This is why they're important .It's that simple."Rare earth magnets are lightweight and unaffected by conditions like high temperatures.So they work well in places like electric motors in hybrid vehicles or generators for wind turbines.Physicists use super-powerful magnets to speed particles and control radiation like X-rays.And the list goes on,says George Haley,who has studied the subject.GEORGE HALEY:"Electronics,fiber optics,you could go down the list of products important not just for the economic success of the United States,but for our defense and for our job creation here at home."Next week,we'll talkmore about rare earth metals,and an American company that plans to start mining them again.And that's the VOA Special English Economics Report,written by Mario Ritter.And follow us on Facebook,Twitter,YouTube and iTunes at VOA Learning English.I'm Jim Tedder.
英语翻译This is the VOA Special English Economics Report.Few people had ever heard of the natural elements known as rare earth metals before a recent dispute between China and Japan.Yet these metals are used in devices like smartphones,flat scree
这就是今天的美国之音特别英语经济报道节目.
很少人听说过自然元素被称为稀土金属之前,最近中国和日本之间的纠纷.然而这些金属用于设备,如智能手机,平坦的荧屏、混合动力汽车电池、MP3播放器和军事装备9月份,日本拘捕了一艘中国争议岛屿附近的队长在东海.中国否认它停止出口到日本的稀土金属强迫他获释.但是这一事件对. 日本是世界上最大的进口商稀土.和中国生产90百分之七的世界供应的. 中国称已经售出将近4亿美元的价值在2008年.但是乔治·营销教授在康涅狄格州大学在康涅狄格说,中国一直保持着价格较低的. 乔治·:“与其它矿物质、稀土元素,20世纪80年代之后,当他们开始生产.“实际上减少了国家矿山稀土金属不再——其中包括美国.原因之一是低成本从中国进口.另一个原因是担心环境破坏.所以这是什么稀土金属?哦,他们中的大多数并不少见,那只是他们的名字.有几个比铜、铅、银人们记住的元素周期表的化学课会认出他们.包括15个稀土镧金属随着scandium钇、. 撒母耳巴德,物理学家芝加哥附近的伊利诺伊州阿格涅国家实验室,称稀土常常发现together.SAMUEL巴德说:“他们都有类似的化学性质.一旦你发现它们,它们非常难以相互隔离.”但巴德先生解释道,相同的属性,这使他们很难精制也使他们宝贵的. 撒母耳说:“稀土金属巴德提供世界上最强大的商业的磁铁.这就是为什么他们是重要的,这是那模型
草!!!我是进来了,一看我又得出去了
高手进来就吓屎了。。。。。等下。我看看