un. 单横行波激光器
[网络] 单模行波激光器；行波单模激光器

数学英语 27 What is the Mode?

by Jason Marshall In recent articles, weve talked about two methods of calculating average values, the mean and the median, and weve talked about some everyday uses for them such as how to use median averaging to get better photos. But thats not all

发表于:2018-12-07 / 阅读(254) / 评论(0)

数学英语

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(181) / 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(170) / 评论(0)

2013年VOA慢速英语(二)月

初中英语日记100字：I like travelling（带翻译）

Last February my parents and I went to Europe for a visit. We had a wonderful time there. It took us about ten hours to fly from Beijing to Budapest, Hungary. And then we visited France, Germany, Italy and other countries. Europe was really beautiful

发表于:2018-12-17 / 阅读(161) / 评论(0)

英语作文

SSS 2011-05-23

This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Whether it's for streaming Netflix or sharing files, we're gobbling up more and more dataand we want it faster. But even shooting data with lasers over fiber-o

发表于:2018-12-24 / 阅读(207) / 评论(0)

Scientific American(五)月

【一起闲话英语】去国外旅行—Travelling abroad

Transcript: A. Good morning. This is an announcement for all passengers travelling on the 9:25 flight TOM1223 to Rome. This flight is delayed by two hours because of bad weather. B. Would all passengers travelling to Tokyo on flight FR3421 please hav

发表于:2018-12-28 / 阅读(185) / 评论(0)

一起闲话英语-English Chitchat

第41期: long, wave, copy, mail, information

说一口流利的英语，从简单的单词开始。听听，读读，背背，今天你的词汇量又增加了5个。单词/词义中英例句单词听读 long [ lCN ] I longed for a bicycle. v

发表于:2018-12-30 / 阅读(250) / 评论(0)

每日攻克5词

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(192) / 评论(0)

2017年VOA慢速英语(七)月

电信专业英英词典M-3

Multimode Optical Fiber(S) Multimode fibers, with much wider cores than single mode fibers, allow light to enter at various angles, and reflect (bounce off of) core-clad boundaries as electromagnetic

发表于:2019-01-03 / 阅读(195) / 评论(0)

电信英语

电信类英语词汇表大全-27

中文英文缩写单（点）播 unicast 单板 board/card 单边测试 one-sided test 单边带 Single Side Band SSB 单边带调制 single sideband modulation 单边带自适应差分 single ban

发表于:2019-01-03 / 阅读(225) / 评论(0)

电信英语

每日一词【1023】heat wave：热浪，高温天气

今天我们要学的词是heat wave。 Heat wave, 热浪，高温天气。 A heat wave is sweeping the Northeastern region of the United States, 美国东北部地区普遍出现高温天气。 The heat wave could be a record-breaker, 这次高温天气

发表于:2019-01-07 / 阅读(227) / 评论(0)

英语每日一词

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(236) / 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(208) / 评论(0)

2012年VOA慢速英语(一)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(217) / 评论(0)

VOA常速英语2007年（十一月）

美国俚语:飞行模式 airplane mode

如果你要暂时逃离这个世界，与世隔绝，暂时不想和熟人接触，你可能会不接电话，不带手机，不上社交网站。通常是因为和恋人分手或者是工作不顺。今天要介绍的俚语是airplane mode，用来形

发表于:2019-02-09 / 阅读(206) / 评论(0)

美国俚语

英语实用口语：5个问路的关键英语表达

Are you travelling to an English speaking country? If you are, one of the most important things you are going to need to know is how to ask for directions: so here are some useful phrases. 你正在一个说英语的国家旅游吗?如果是的，最重

发表于:2019-02-16 / 阅读(123) / 评论(0)

英语口语

旅游(Travelling)

It is exciting to visit different places. As you travel, you will see beautiful sceneries typical of the region. Besides, you can meet and make friends with people of different colors and races. Finally, you can get to know the customs and living hab

发表于:2019-02-18 / 阅读(145) / 评论(0)

英语作文

5个问路的关键英语表达

发表于:2019-02-19 / 阅读(145) / 评论(0)

英语口语

趣味青春英语电台第360期:Travelling for Spring Festival

Topic: Parts of China travelling 关于中国的旅行 Travelling for Spring Festival 春节期间的旅行

发表于:2019-02-23 / 阅读(186) / 评论(0)

趣味青春英语

英语口语中问路的表达方式

Remember to be polite when asking for directions and dont forget to say thank you! 问路的时候切记一定要礼貌，不要忘记说谢谢。 Are you travelling to an English speaking country? If you are one of the most important things you are

发表于:2019-02-24 / 阅读(150) / 评论(0)

英语口语

最新学习文章

热门学习文章

热门标签

英语听力 VOA标准英语 VOA 英语歌曲口语听力提高听力材料听力教程英语学习 NPR 英语口语 VOA慢速英语美国国家电台儿童英语 VOA英语小学英语 cnn VOA常速英语标准英语英文歌曲听电影学英语英语单词英文电影慢速英语 CRI 美联社新闻美国有线新闻加州分级澳洲新闻流行歌曲常速英语 ABC新闻快递疯狂英语英语读物听力棚车少年经济学人英语词汇商务英语 VOA双语新闻 BBC 中国电台大学英语 Treasures 加州语文 BBC英语英语听力网站 VOA英语教学词汇万花筒 SSS VOA英语听力 AP 新概念分级英语英语广播听力精选英语播客英文绘本 TED演讲赖世雄英语MP3 CCTV9英语新闻 lesson 英语新闻初中英语学英语英语语法历史上的今天英文广播剧英语游戏原版英语小说英语有声读物书虫英语牛津英语读物访谈录新闻一分钟考研英语英语每日在线听新闻 Us 新概念英语地道英语单词第二册自然百科高中英语 sports 实用英语 MP3听力辛沛沛 ESL英语第一册英语每日一句 unit 新东方 GRE 每日一词 BBC听力

学英语单词

capture and recapture experiment