单词：helium leak detection mass spectrometer
单词：helium leak detection mass spectrometer 相关文章
身体健康常用词汇 regular check-up / health checks定期体检 die from / of (cancer)死于癌症 make it to the end of your natural term有幸自然死亡 take risks冒险 earlier detection and treatment更早的诊断和治疗 place strain o
四六级词汇与结构练习
A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Sun's very center. It is here that is to be found the source of the energy that the Sun constantly pours out into space as light and h
英语小短文
This is Scientific American's 60-Second Science. Im Cynthia Graber. This will just take a minute. One of the problems with large-scale solar power plants is that they require a huge amount of space. To rise above that problem Israeli researchers rece
Scientific American(三)月
WASHINGTON, July 26 (Xinhua) -- White House Spokesman Robert Gibbs on Monday said the United States is investigating the leak of over 90,000 classified reports about Afghanistan war. Gibbs said there is an ongoing（不间断的） investigation that
英语新闻
1. Five people are dead after an unsuccessful emergency landing in Sanford, Florida, setting two houses on fire. The husband of a top NASCAR official and a company pilot are among the dead. An adult and two children who were in their homes were also
美联社新闻一分钟2007
The source of Energy A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Sun's very center. It is here that is to be found the source of the energy that the Sun constantly pours out into
英语小短文
AS IT IS 2014-07-13 Move over World Cup, Time for RoboCup 世界杯后开始机器人杯 The end of the World Cup does not mean the end of international competition in Brazil this year. A major football event will happen in the South American country
2014年VOA慢速英语(七)月
From Shakespeares Pen to Our Mouths 从莎士比亚的笔到我们的嘴 Now, time for Words and Their Stories from VOA Learning English. William Shakespeare is probably the most famous English-language writer ever. Historians think Shakespeare was b
2016年VOA慢速英语(五)月
His dad liked to fly balloons. His dad bought big balloons and filled them with helium. Helium is a gas. It is a gas that makes balloons float into the sky. One day his dad brought home a new balloon. He took it out of the box. He took it outside. He
英语第1级听力-English Level 1
今天我们要学的词是leak。 Leak是泄漏消息的意思。The contents of the report were leaked to the media, 是说报告内容被泄漏给了媒体。公司裁员的消息不知被什么人走漏了风声，the plans for the layoff have so
英语每日一词
By Cynthia Kirk Broadcast: October 11, 2003 This is Bob Doughty with In the News, from VOA Special English. Officials are investigating who in the Bush administration identified an American intelligen
VOA2003（下）-教育与新闻
By Paul Sisco Washington, DC 17 October 2007 Medical imaging and improved computer technology are significantly making the detection of heart disease easier, safer and better. VOA's Paul Sisco reports. Dr. James Earls is the medical director at Fairf
2007年VOA常速英语（十月）
Questions 12-20 The elements other than hydrogen and helium exist In such small quantities that it is accurate to say that the universe somewhat more than 25 percent helium by weight and somewhat less than 25 percent hydrogen. Astronomers have measur
托福英语
HELSINKI, Nov. 7 (Xinhua) -- A data leak was uncovered in Finland Saturday, in which personal details of around 16,000 people were uploaded onto a file-sharing website, according to Finnish media report on Monday. This act of sabotage is the largest
英语新闻
Government officials in Japan say it could take months for radiation(放射辐射) leaks to be brought under control at the Fukushima Daiichi nuclear power plant. The Fukushima Daiichi plant continues to spew radioactive water into the Pacific Ocean
英语新闻
Let's begin by winding the timeline back 13.7 billion years, to the beginning of time. 让我们把时间往回拨到137亿年前，也就是时间的开始。 Around us, there's nothing. There's not even time or space. 四周是什么也没有，根本
TED演讲教育篇
With a variety of bands, and price tags ranging all the way from $349 $17,000, theres an Apple Watch for everyone. Except, possibly, the heavily tattooed. 面向大众推出的Apple Watch，款式多样，价格从349美元到17000美元不等。现在
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Voice 1 Thank you for joining us today for Spotlight. Im Rebekah Schipper Voice 2 And Im Joshua Leo. Spotlight uses a special English method of broadcasting. It is easier for people to understand no matter where in the world they live. Voice 3 The ni
环球英语 Spotlight
It's so..you know there are so many bullies,and it goes on so much 现在有很多恃强凌弱者 这种事情经常发生 and you know I think that, you should,especially if you are like a bystander. 我觉得，有些人应该， 特别是如果你就
艾伦脱口秀
Over the lights of sunset and vine We're floating away From the fortune and fame And your lips are mine They're raspberry wine Your body's a map I will follow into the sky Cause what you got Is all that I want It's all that I want And still that's no
美国乡村音乐