单词：ruolz alloys
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What Makes White Gold White? Many people associate the metal gold with the color gold. But, some gold jewelry is not golden at all: its white. 图片1 Golden Color Gold is one of the heaviest and softest metals. Pure gold, called 24-carat gold, is so
英语听力文摘 English Digest
Is His Name Santa Claus, Saint Nicholas, Kris Kringle or Pelznickel? Who Cares, So Long As He Brings Gifts! Now, the VOA Special English program Words and Their Stories. Santa Claus is someone who will remain in the hearts of children forever. He is
2013年VOA慢速英语(十二)月
'Metal Muscles' Flex a New Bionic Hand 德国科学家发明新的仿生手 Artificial limbs, including the most complex of them the human hand are getting more life-like and useful due to constant advances in tiny hydraulic, pneumatic and electric m
VOA标准英语2015年(七月)
Many people associate the metal gold with the color gold. But, some gold jewelry is not golden at all: its white. 很多人都认为金子就应该是金色。但一些黄金首饰的颜色并不是金色，而是白色。 Golden Color 金色 Gold is
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That budget now stands at $5,400 million a yeara staggering sum, though somewhat less than we pay for cigarettes and cigars every year. Space expenditures will soon rise some more, from 40 cents per person per week to more than 50 cents a week for ev
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What Makes White Gold White? Many people associate the metal gold with the color gold. But, some gold jewelry is not golden at all: its white. Golden Color Gold is one of the heaviest and softest metals. Pure gold, called 24-carat gold, is so soft th
英语听力文摘 English Digest
By Nancy Steinbach Broadcast: October 10, 2004 (THEME) ANNCR: Every week we tell about someone important in the history of the United States. Today, Shirley Griffith and Ray Freeman tell about the first western woman in modern times to become a docto
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Charles Schulz wrote the popular comic stripPeanuts for fifty years Written by Jerilyn Watson (THEME) VOICE ONE: Im Barbara Klein. VOICE TWO: And Im Steve Ember with People in America in VOA Special English. Today we tell about Charles M. Schulz who
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SCIENCE REPORT — March 7, 2002: Alzheimer’s Disease By Nancy Steinbach This is the VOA Special English Science Report. Medical researchers say a new study shows a link between the mental condition
科技之光
Copper Metal Kills Viruses on Contact 铜能杀死细菌和病毒 Even in the world of medicine, what is old is new again. 医药界也刮起了复古风。 Thousands of years ago, Egyptians used it to sterilize drinking water. Ancient Romans, Aztecs
2016年VOA慢速英语(二)月
By Peter Heinlein United Nations 24 April 2007 Veteran U.S. diplomat Zalmay Khalilzad has taken over as ambassador to the United Nations, saying he sees the greater Middle East as the defining challenge of our times. From U.N. headquarters, VOA's Pet
2007年VOA标准英语（四月）
By Stephanie Ho Washington 29 October 2006 The U.S. ambassador to Iraq is downplaying reports of an apparent dispute between Washington and Baghdad. VOA's Stephanie Ho reports from Washington, where officials deny the United States is trying to tell
2006年VOA标准英语（十月）
Various stages of cartilage growth on scaffold. The final image on the right shows naturally forming cartilage for comparison. These replacement joints can be made of combinations of metal alloys, plastic and ceramic, but new research shows that it m
VOA标准英语2010年(八)月
SCIENCE IN THE NEWS - October 1, 2002: Alzheimer’s Disease By Oliver Chanler VOICE ONE: This is Steve Ember. VOICE TWO: And this is Bob Doughty with Science in the News, a VOA Special English progra
科技之光
Congratulations, you've arrived on the hottest surface in the solar system. Here, the official temperature is eight hundred seventy degrees Fahrenheit. Day or night, equator or pole, the searing heat never varies more than a few degrees, and thats wh
自然百科2012年
Nitinol Nitinol is one of the most extraordinary metals to be discovered this century: A simple alloy of nickel and titanium, nitinol has some perplexing properties. A metal with a memory, it can be made to remember any shape into which it is fashion
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ArcelorMittal will launch a new high-strength automotive steel later this year, throwing down the gauntlet to its rivals in the race to make cars lighter. 安赛乐米塔尔(ArcelorMittal)将于今年晚些时候发布一款新型高强度汽车用钢，
英语新闻
Calculationsofthedensityofalloys basedonBernal-typemodelsofthe alloysmetalcomponentagreedfairly wellwiththeexperimentallydetermined valuesfrommeasurementsonalloys (55)consistingofanoblemetaltogether wi
英文语法词汇
SARAH MCCAMMON, HOST: As the name of our show suggests, we do like to consider all things on this program, which is why we want to warn listeners that the conversation we're about to have might not be appropriate for all listeners because we'll be sp
2019年NPR美国国家公共电台1月