单词：yttrium aluminium garnet laser
单词：yttrium aluminium garnet laser 相关文章
By Carol Pearson Washington 30 April 2008 Ten years ago, the U.S. Food and Drug Administration approved LASIK, eye surgery with a laser that enables people to see without glasses. But about five percent of LASIK procedures fail, and those patients ca
VOA常速英语2008年（四月）
EXPLORATIONS - The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can
2013年VOA慢速英语(二)月
New Laser Device Helps Parkinson's Patients Walk 新激光设备帮助帕金森患者重获行走能力 Parkinsons disease slowly destroys the brains ability to control the muscles, depriving the patients of their mobility. Researchers at the Mayo Cl
VOA标准英语2014年(二月)
The aluminium smelter at Tiwai Point near Invercargill opened in 1971. It had a contract to buy cheap electricity, generated by hydro-electricity from Lake Manapouri which is not far away. Now in 2013, 13% of all electricity generated in New Zealand,
新西兰英语
The United States Navy has demonstrated a new laser weapon operating in the Persian Gulf. The Laser Weapons System, or LaWS, is deployed on the USS Ponce transport ship. A live test firing of the weapon was recently carried out for Cable News Network
2017年VOA慢速英语(七)月
Tunnels in Gemstone Might Be Sign of Life Life has found a way to survive in some of the most extreme conditions in existence. Now, scientists believe they might have found a new habitat for microscopic organisms inside a mineral substance called gar
2018年VOA慢速英语(八)月
This is All Things Considered. I'm Michelle Norris. Phone calls from Sweden woke up two American scientists this morning, John Hall and Roy Glauber. They will share the Nobel Prize for Physics with a German Researcher Theodor Haensch. All three worke
2005年NPR美国国家公共电台
The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can go from the sci
2013年VOA慢速英语(五)月
EXPLORATIONS - The Laser: Futuristic Science Found at Your Local Store MARIO RITTER: Welcome to EXPLORATIONS in VOA Special English.Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one
2012年VOA慢速英语(一)月
A: I am looking for a pan. B: No problem. What size would you like? A: A big one would be nice. B: How about this one? It's our biggest16 in diameter. A: Oh, yes. I like that one. But it's too heavy. B: Okay, try this one. It's made of aluminum. A: O
购物英语对话
A: Can you help me find a pan? B: Are you looking for a small, medium, or large pan? A: I want a big pan. B: Does this one look big enough? A: Yes, it's the right size, but it weighs too much. B: Well, what do you think of the aluminum pan? A: It's l
购物英语对话
A: I'd like to purchase a pan. B: Is there any particular size that you want? A: Well, I cook a lot of big meals. B: What do you think of this one? It's a 16 pan. A: Yes, that's the right size, but it's so heavy. B: Well, look at our aluminum pan. It
购物英语对话
By Paul Sisco Washington 14 November 2007 At the McDonald Observatory in western Texas, a unique space program has been quietly underway for more than 30 years. It is called the Lunar Laser Ranging Program. VOA's Paul Sisco has more. Research scienti
VOA常速英语2007年（十一月）
Selfies could soon be even sharper, if claims about Apple's next iPhone are confirmed. 若关于下一代iPhone的推测属实，自拍体验或许会更加炫酷。 Experts analysed the recent test version of iOS 9 released by the firm - and founds
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Two fresh attacks by short sellers on Hong Kong-listed stocks are testing the citys efforts to limit companies ability to halt their shares from trading without answering allegations. 卖空者对香港上市股票发起的两起最新袭击，正在考
英语新闻
1. The search continues for 20-year-old Lauren Spierer. Police have few leads but suspect foul play in the disappearance of the Indiana University sophomore who has been missing for five days. 2. Moammar Gadhafi stood defiant in the face of the heavi
美联社新闻一分钟2011(六月)
And是一个常用的并列连词。其一般的用法和译法，已有不少文章论及。本文仅就and的一些特殊用法作一简单介绍。 一、And前后的两部分表示同时发生的动作，或同时存在的属性、特征等可译为
英文语法词汇
Current-account imbalances are not always a cause for concern. 经常账户失衡并不总是一件令人担忧的事。 As a matter of arithmetic, they measure the gap between domestic savings and investment. 基于数理逻辑，他们对国内储蓄
经济学人财经系列
Ytterby 瑞典小镇伊特比 yttrium 钇 (1794) erbium 铒 (1842) terbium 铽 (1842) ytterium 镱 (1907) 1794年在瑞典小镇伊特比的黑石中发现了化学元素钇，决定用 Ytterby命名该元素：yttrium。1842 年在该镇的黑石中发
实用英语
In the small village of Lasanayah, Mamadou Kalissa looks out over his ancestral home. 在Lasanayah的一个小村庄里，马马杜卡利萨朝着自己的老家看去。 Last year it was farmland but now bauxite mining has turned it into a Martian l
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