单词：iron nickel copper molybdenum alloy
单词：iron nickel copper molybdenum alloy 相关文章
By Gary Garriott Broadcast: November 3, 2003 This is Steve Ember with the VOA Special English Development Report. People have been recycling metals for hundreds of years. Today, re-using metal waste o
VOA2003（下）-发展与科学
Speaking of Olympic trivia, the Sochi Olympics are already breaking many records. Probably the most surprising is the cost of the games. According to some estimates, this will be the most expensive Olympic Games ever, summer or winter. In fact, at 51
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图片1 metal n. 金属 例句：This metal is harder than that one. 这种金属比那种硬。 metallic adj. 金属(性)的 例句：Fannie' s shovel struck against something metallic when she wasplanting flowers in the garden. 当芬妮在花园里种
漫画搞定六级词汇（文本+音频）
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
President Obama`s administration says it`s more concerned with what`s in coins than who`s on them. The penny in your pocket might look like copper, but copper actually makes up less than 3 percent of a one-cent coin. And the main metal in nickels ain
CNN2012年(二)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
初学者听力文摘精选
Chapter 14 Wonderland 第14章 仙境 ALICE IN WONDERLAND is a fairy-tale, but there is a real Wonderland out in the West. One of the wonders is a river. 爱丽丝漫游仙境是一个童话故事，但是远在西部真有一个充满奇迹的仙境。
美国学生世界地理教材
Business before pleasure. 事业在先，享乐在后。 A great many people take trips on these big lake boats just as they do on the oceanfor pleasure; 很多人乘着大湖上的船只游玩，就像出海度假一样。 but the chief reason for t
美国学生世界地理教材
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
EDUCATION REPORT - 'Iron Science Teacher' and More at the ExploratoriumBy Nancy Steinbach Broadcast: Thursday, July 27, 2006 This is the VOA Special English Education Report. The Exploratorium is hous
2006年慢速英语（七）月
DEVELOPMENT REPORT - Recycling Scrap Metal Into MoneyBy Gary Garriott Broadcast: Monday, July 31, 2006 This is the VOA Special English Development Report. People have been recycling metals for hundred
2006年慢速英语（七）月
Lesson 64 The Red Metal Called Copper 第64课 红色金属铜 There is only one metal which is red in colour. Its name is copper. On the shores of Lake Superior in North America, lumps of pure copper are found in the rocks; but in Cornwall , and in
英国学生科学读本
The Streaming down the Yangtze team has arrived in the city of Tongling, Anhui Province. Owing to its copper deposits, it was an important center in ancient China for bronze production. The scale of the copper industry has gradually increased and it
2018CRI中国国际广播电台
Passage One 26. A. They were possibly caused by man. B. They were mostly caused by volcanoes. C. They were certainly caused by nature. D. We know nothing about their causes. 27. A. Afraid. B. Excited. C. Curious. D. Indifferent. 28. A. Copper and iro
英语四级听力-短对话
Lesson 37 All About A Penny 第37课 关于便士 When I was a little boy, pennies, and halfpennies, and farthings were made of pure copper. But copper is too soft a metal to stand the rubbing which coins get. So these old pennies soon became so smoo
英国学生科学读本
We now know that there are a lot of microbes living deep within the Earth, many of which have nothing at all to do with the organic world. 我们现在知道了，有大量微生物生活在地球内部的深处，其中许多与普通的有机世界毫
万物简史
The Cleaning Power of Soft Drinks! 饮料的神奇清洁能力 Lets begin with a cleaning tip: If you have some tarnished or corroded brass that you want to clean, an old brass candlestick for example, you can use Coca-Cola, or any other cola soft dr
英语听力文摘 English Digest
This time a large set of ancient tombs dating back to the Han Dynasty, in central China's Hunan Province. Archaeologists have so far found 48 brick-chambered tombs and over 10 earthen tombs. They have also dug out more than 150 burial objects, includ
cctv9英语新闻2016年
The Oscar statuette is the symbol of the Academy Awards. Here are some facts about the trophy itself. 奥斯卡小金人是奥斯卡金像奖的象征。这里有一些关于奖杯本身的事实。 1. The original design of Oscar was by MGM art dire
趣味英语