振幅稳定激光器

VOA常速英语2008年-US Government Reviews Laser Eye Surgery

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

发表于:2018-12-08 / 阅读(143) / 评论(0)

VOA常速英语2008年（四月）

VOA慢速英语2013 EXPLORATIONS - The History of the Laser

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

发表于:2018-12-16 / 阅读(129) / 评论(0)

2013年VOA慢速英语(二)月

英语笑话听力+文本：AM radio 调幅收音机

Iknewaguywhoplayedhisradioonlyinthemorning. Whensomeoneaskedhimwhy ， hereplied,ThisisanAMradio. Notes: 1.Iknewaguywhoplayedhisradioonlyinthemorning. 我认识一个人，他只在早上收听广播。 2.Whensomeoneaskedhimwhy ， hereplied,Thisisan

发表于:2018-12-26 / 阅读(131) / 评论(0)

英语笑话（MP3+文本）

世界节假日博览第65期:昏睡司机清醒日

California has an awareness day that all countries around the world should have. It is Drowsy Driver Awareness Day and it happens on April 6 every year. Its aim is to raise awareness of the dangers of driving your car (or riding your motorcycle) for

发表于:2018-12-29 / 阅读(192) / 评论(0)

世界节假日博览

生活大爆炸第二季第五集_2：The Euclid Alternative

-Leonard：Look, I need to get enter the laser lab. You're just gonna have to find someone else to take you home. 反正我要用激光实验室，你只能找别人送你回家了。 -Howard：Ah, damn, I picked the wrong side. 该死，我站错队了

发表于:2019-01-01 / 阅读(147) / 评论(0)

生活大爆炸第二季

Watch the US Navy’s New Laser Weapon in Action

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

发表于:2019-01-02 / 阅读(140) / 评论(0)

2017年VOA慢速英语(七)月

电信专业英英词典Q

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电信英语

电信专业英英词典W, X, Y, Z

WAN wide area network WARC World Administrative Radio Consortium WATS Wide-area telecommunications services. See Wide-area telecommunications services. Waveform amplitude (magnitude) versus time repre

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电信英语

电信专业英英词典D-5

DCE data circuit terminating equipment DCP digital communications protocol DCS digital cross-connect system DDD direct distance dialing DDN Defense Data Network Digit L Digital L is another amplitude

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电信英语

电信专业英英词典A-1

Abort - To stop doing something. Particularly, to exit a software program or stop receiving or sending a message. Access - (1) (verb) to get use of something, or (2) (noun) refers to a particular leve

发表于:2019-01-03 / 阅读(164) / 评论(0)

电信英语

电信英语及其缩略语解释-1

APCM Adaptive Pulse Code Modulation 自适应脉码调制 APCM是在PCM基础上，采用量化自适应，使均方量化误差最小的一种调制方法。 APD Avalanche Photo Diode 雪崩光电二极

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电信英语

电信英语及其缩略语解释-2

ASE Application Service Element 应用服务单元 ASE Amplified Spontaneous Emission 放大自发辐射 ASIC Application Specific Integrated Circuit 专用集成电路 ASF Advanced Streaming Format 高

发表于:2019-01-03 / 阅读(147) / 评论(0)

电信英语

SSS 2010-11-02

This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Toss a piece of leaf onto a spider web. The spider is indifferent. Because leaves don't squirm like captured flies. But Australia's assassin bug turns the tabl

发表于:2019-01-08 / 阅读(275) / 评论(0)

Scientific American(十一)月

NPR 2010-11-13

President Obama's spending the last two days of his Asia tour in Japan, shoring up trade support at a regional summit after suffering a few setbacks. Earlier at the G20 meeting in Seoul, the president was unable to secure a free trade pact with South

发表于:2019-01-08 / 阅读(182) / 评论(0)

2010年NPR美国国家公共电台11月

VOA标准英语2013--The History of the Laser

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

发表于:2019-01-12 / 阅读(189) / 评论(0)

2013年VOA慢速英语(五)月

VOA慢速英语2012--The Laser: Futuristic Science Found at Your Local Store

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

发表于:2019-01-12 / 阅读(163) / 评论(0)

2012年VOA慢速英语(一)月

VOA标准英语2009年-Southeast Asia Faces Rising Risks From

In Southeast Asia, people know well the risks that extreme weather can bring, and they worry that a warmer climate will increase those risks. !Pros Laput, Daniel Schearf | Bangkok 19 December 2009 When Typhoon Ketsana hit Manila this year, the crowde

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VOA标准英语2009年(十二月)

VOA常速英语2007年-Scientist in Texas Runs NASA's Lunar Laser Prog

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

发表于:2019-01-31 / 阅读(164) / 评论(0)

VOA常速英语2007年（十一月）

XDF考研词汇串讲文本a5

along prep. 沿着ad. 向前走解析：表示沿着或向前走,一般指沿着一个线性的方向 along with 与……一起 alongside prep. 在……旁边,并肩 alphabet n. 字母表,字母系统

发表于:2019-02-03 / 阅读(186) / 评论(0)

英文语法词汇

强烈推荐考研高频词汇二-A

A abbreviation,absorption,abstract,abundance,acceleration,acceptance, accessory,accommodation, accordance,acquaintance,acquirement,acquisition,adjustment,administration, admiration,admission, adoption

发表于:2019-02-18 / 阅读(146) / 评论(0)

考研英语

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