可见光激光器;可见激光器

VOA慢速英语--天文观测者期待“月亮超级碗”

Sky Watchers Prepare For the 'Super Bowl' of Moons This is What's Trending Today. The moon is providing a rare triple treat this week. 月亮将会在本周给人们带来一次罕见的三重乐趣。 On Wednesday, much of the world will get to see

发表于:2018-12-08 / 阅读(147) / 评论(0)

2018年VOA慢速英语(一)月

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(113) / 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(97) / 评论(0)

2013年VOA慢速英语(二)月

VOA常速英语2014--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

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

发表于:2018-12-16 / 阅读(82) / 评论(0)

VOA标准英语2014年(二月)

美国科学60秒 SSS 2015-01-06

Sometimes it is hard to see the light, especially it lies in the invisible spectrum, like ultrared, ultraviolet radiation. But if you long to see the unseeable, you might interested to hear that under certain conditions people can catch a glimpse of

发表于:2018-12-24 / 阅读(93) / 评论(0)

2015年Scientific American(一)月

趣味青春英语第116期:Nose in the air

Idiom: Nose in the air形容人自大，傲慢 Hit the book: Undercover Confiscate Enclosure Visible Multiple Cub Notorious Lameness

发表于:2018-12-27 / 阅读(332) / 评论(0)

趣味青春英语

考研英语长难句讲解第28期

2. However, the typical teenage lifestyle is already filled with so much competition that it would be wise to plan activities in which there are more winners than losers, for example, publishing newsletters with many student-written book, displaying

发表于:2018-12-30 / 阅读(97) / 评论(0)

考研英语长难句讲解

赖世雄进阶英语词汇3500 Unit21

vision n.视力；影像；眼光；先见；远见 I wear glasses to improve my vision. 我戴眼镜以改善我的视力。 It is said that the children saw a vision of an angel here. 据说这些孩子在这里看到天使的影像。 The mayor ha

发表于:2018-12-30 / 阅读(133) / 评论(0)

赖世雄进阶英语词汇3500

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(111) / 评论(0)

2017年VOA慢速英语(七)月

自行车道路安全

Jennifer: Hello and welcome to 6 Minute English from bbclearningenglish.com. My name is Jennifer and Im joined in the studio by Neil. Neil: Hello. In this programme, we look at a story in the news and teach you some new vocabulary and expressions alo

发表于:2019-01-07 / 阅读(109) / 评论(0)

六分钟英语

2005年NPR美国国家公共电台九月-Laser Work Earns Trio Nobel Prize for Phy

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

发表于:2019-01-08 / 阅读(171) / 评论(0)

2005年NPR美国国家公共电台

如何利用词根来扩大词汇量？

怎么快速提高四级词汇量?有什么方法可以让单词不仅仅是记忆单词，而是记住了就可以不忘? 下面小编为大家带来的这篇文章就是借助词根记忆四级词汇，希望可以帮到童鞋们~~ 在翻看英语词

发表于:2019-01-11 / 阅读(103) / 评论(0)

英文语法词汇

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(154) / 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(123) / 评论(0)

2012年VOA慢速英语(一)月

Ring of Fire Eclipse Passes Over Africa

AS IT IS 2016-09-02 Ring of Fire Eclipse Passes Over Africa People in parts of Africa witnessed a ring of fire in the sky Thursday, created by the moon passing between the Earth and the sun. The solar event is called an annular eclipse. A total solar

发表于:2019-01-12 / 阅读(104) / 评论(0)

2016年VOA慢速英语(九)月

孙燕姿的“绿光”真实存在

还记得孙燕姿那首红遍大江南北的《绿光》吗？翻越过前面山顶、层层白云，绿光在哪里？不知道有多少人跟小编一样，以为歌里的绿光只是对幸福的比喻。而其实在现实中，绿光是真实存在

发表于:2019-01-28 / 阅读(104) / 评论(0)

实用英语

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(132) / 评论(0)

VOA常速英语2007年（十一月）

《原来如此》这就是社交网络

Welcome to Social Networking in Plain English. 本期介绍社交网络。 Networks get things done. Whether it's sending a letter or lighting your home. Networks make it happen.To get from Chicago to Santa Fe, we need to see the network of roads tha

发表于:2019-02-04 / 阅读(94) / 评论(0)

英语万花筒

如何利用词根法扩大四级词汇量

很多学生问怎么快速提高四级词汇量，有什么方法可以让单词不仅仅是记忆单词，而是记住了就可以不忘，下面小编为大家带来的这篇文章就是借助词根记忆四级词汇，希望可以帮助大家高效

发表于:2019-02-05 / 阅读(123) / 评论(0)

大学四六级阅读

托福口语如何否定句式集锦

1. There is not a moment to be lost. 分秒必争。 2. There is noholding back the wheel of history. 历史车轮不可阻挡。 3. Nota soul was anywhere visible. 到处见不到一个人。 4. I felt sorry for not coming in time. 我很抱歉没准时

发表于:2019-03-13 / 阅读(159) / 评论(0)

托福英语

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a Xian

ACMP

across span lift distribution

antilust

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bearing with side plate

change control domain