单词：friction energy loss
单词：friction energy loss 相关文章
Five things you should know about earthquakes. 关于地震你应该知道的5点 Number one, an earthquake occurs when two blocks of the Earth slip fast each other. Now, for most of the time, those blocks are together with friction. But they are bui
CNN美国有线新闻2017年11月
Some Chinese scholars are suggesting that it's unlikely to see a trade war between China and the United States. But meanwhile, they are also calling on both sides to work towards improving bilateral economic cooperation. The remarks come amid growing
2018CRI中国国际广播电台
Welcome to the Science Talk, the weekly podcast of Scientific American posted on February 18th, 2010. I am Steve Mirsky. And you know what the hottest sport in the world is right now? Thanks to the Winter Olympics, it is, of course, curling. That's t
Scientific American(二)月
Potential energy in a crossbow When we think of the concept of energy, we often think of objects in motion: a car rolling down a hill or a jogger running up a hill. This kind of energy-in-motion, called kinetic energy, isnt the only kind of energy. A
英语时差8，16
Dear Mrs. Malcolm, 亲爱的马尔科姆夫人， I want to say how sorry I am about Chris. 对于克里斯的离去我感到很难过。 During the last year I worked with him continually and I am sure I could not have found anywhere another compani
见信如晤Letters Live
Intermediate filaments - unlike microfilaments and microtubules, they are verystable. Instead of being stacked proteins, as in actin, intermediate filaments are built of interlocking proteins. A dense
医务英语
We're dedicating this edition of CNN Student News to our audience in Japan. The world is watching in support, and you are not alone. The nation of Japan is reeling today, trying to recover from a devastating natural disaster. The earthquake hit the i
CNN2011年(三)月
Without exaggeration, this juice is a real nutritional powerhouse that helps cleanse your body, shed pounds, improve immune system and protect against heart disease. It will instantly fill you up with a plethora of vitamins that will help you fight b
实用英语
By David McAlary Washington 21 November 2006 The United States and more than 30 other nations have signed a $13 - billion agreement to develop a form of nuclear power in a process called fusion. In a Paris signing ceremony, they agreed to cooperate
2006年VOA标准英语（十一月)
STEVE INSKEEP, HOST: When it comes to healthy aging and keeping your memory sharp, here's one idea you may not have considered. Get your hearing checked, your ears. NPR's Allison Aubrey reports a new study finds people who restore hearing loss with h
2018年NPR美国国家公共电台10月
By Peta Thornycroft 22 November 2007 The political future of Morgan Tsvangirai, the leader of Zimbabwe's divided opposition Movement for Democratic Change, is facing challenges. As Peta Thornycroft reports for VOA, many of his closest associates are
VOA常速英语2007年（十一月）
By Andre de Nesnera Washington 11 October 2007 Relations remain tense between Russia and Georgia several weeks after Georgian forces killed two Russian military officers in the Georgian separatist region of Abkhazia. In this background report from Wa
2007年VOA常速英语（十月）
By David Gollust State Department 16 July 2007 The State Department said Monday there is no rift between the Bush administration and former British Prime Minister Tony Blair over his new role as envoy for the international Middle East Quartet. Mr. Bl
2007年VOA标准英语（七月）
Without exaggeration, this juice is a real nutritional powerhouse that helps cleanse your body, shed pounds, improve immune system and protect against heart disease. It will instantly fill you up with a plethora of vitamins that will help you fight b
阅读空间
BEIJING, June 12 (Xinhua) -- Pressure from trade frictions has continued to increase this year for Chinese enterprises, while further challenges are expected in the future, a commerce official said. Li Chenggang, head of the Department of Treaty and
英语新闻
WASHINGTON, Nov. 14 (Xinhua) -- Nearly a fifth of all Americans 12 years or older have hearing loss so severe that it may make communication difficult, according to a new study led by Johns Hopkins University researchers and published Monday in the A
英语新闻
BEIJING, Apr. 16 (Xinhuanet) -- China and the United States will experience more trade friction in the high-end manufacturing sector, as Washington protects its domestic industries, officials said on Sunday. Friction will surely increase as China and
英语新闻
And if the economy is based on export of goods, of materials， manufactured goods, then you are dependent on the rest of the world for your economy. But if you spur internal growth by doing innovation and creating things and then selling to each oth
2016CRI中国国际广播电台
China, EU to negotiate over solar panel friction BEIJING, Sept. 11 (Xinhua) -- The Chinese government on Tuesday sent a delegation to Europe to negotiate with the European Union (EU) about the trade friction over solar panel imports. The delegation,
英语新闻