[激光] 集成光学激光器

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(86) / 评论(0)

VOA常速英语2008年（四月）

电信术语(1)

序号中文英文术语解释缩写来源 1 光时域反射法（OTDR），向后散射法 OPTICAL TIME DOMAIN REFLECTOMETRY，BACKSCATTERING TECHNIQUE 靠光脉冲传输通过光纤，测量返

发表于:2018-12-08 / 阅读(87) / 评论(0)

电信英语

小学综合英语1A--INTEGRATED PRIMARY ENGLISH 1A

INTEGRATED PRIMARY ENGLISH 1A [01:35.19]The alphabet [01:43.29]Aa apple [01:48.46]Bb baby [01:52.90]Cc carrot [01:57.16]Dd door [02:01.31]Ee egg [02:05.99]Ff flower [02:10.43]Gg grass [02:15.60]Hh hat [02:20.46]Ii ice cream [02:25.32]Jj jar [02:29.68

发表于:2018-12-13 / 阅读(188) / 评论(0)

小学综合英语1A

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(76) / 评论(0)

2013年VOA慢速英语(二)月

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(97) / 评论(0)

Scientific American(五)月

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(92) / 评论(0)

2017年VOA慢速英语(七)月

电信术语(2)

序号中文英文术语解释缩写来源 21 光接入网 optical access network 由光传输系统支持的共享同一网络侧接口的接入连接的集合。OAN可以包含与同一OLT相连

发表于:2019-01-03 / 阅读(102) / 评论(0)

电信英语

Integrated Schools In America, 50 Years Later

This week, Americans mark a turning point in the history of the United States. Fifty years ago, the Supreme Court issued a ruling that declared racial segregation in the nation's public schools to be

发表于:2019-01-06 / 阅读(83) / 评论(0)

VOA2004（上）--国际时事

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序号中文英文术语解释缩写来源 101 操作维护中心 Operation and Maintenance Center OMC YD/T 1221.1-2002 102 光分插复用器 Optical Add/Drop Multiplexer OADM YD/T 1205-2002 1

发表于:2019-01-08 / 阅读(97) / 评论(0)

电信英语

电信术语(7)

序号中文英文术语解释缩写来源 121 出接口 outcoming interface oif YD/T 1177-2002 122 操作维护应用部分 OMAP YD/T 1180-2002 123 开放系统互连 OSI YD/T 1180-2002 124 光放

发表于:2019-01-08 / 阅读(78) / 评论(0)

电信英语

电信术语(9)

序号中文英文术语解释缩写来源 161 光配线网 Optical Distribution Network ODN YD/T 1250-2003 162 光线路终端 Optical Line Termination OLT YD/T 1250-2003 163 光网络单元 O

发表于:2019-01-08 / 阅读(92) / 评论(0)

电信英语

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(122) / 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(88) / 评论(0)

2012年VOA慢速英语(一)月

AGRICULTURE REPORT - Integrated Pest Management

AGRICULTURE REPORT - Integrated Pest Management By Mario Ritter Broadcast: Tuesday, February 22, 2005 I'm Gwen Outen with the VOA Special English Agriculture Report. The use of pesticides was an impor

发表于:2019-01-30 / 阅读(97) / 评论(0)

农业与发展

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(105) / 评论(0)

VOA常速英语2007年（十一月）

电信术语(14)

序号中文英文术语解释缩写来源 261 操作和维护 Operation Maintenance O＆M YD/T 883-1999 262 操作维护和管理 OAM YD/T 997-1999 263 操作维护中心 Operation Maintenance

发表于:2019-02-01 / 阅读(136) / 评论(0)

电信英语

电信术语(13)

序号中文英文术语解释缩写来源 241 光线路终端 OLT YD/T 1090-2000 242 光网络终端 ONT YD/T 1090-2000 243 光网络单元 ONU YD/T 1090-2000 244 操作系统 OpS YD/T 1090-20

发表于:2019-02-01 / 阅读(127) / 评论(0)

电信英语

电信术语(12)

序号中文英文术语解释缩写来源 221 开放系统互连 Open System Interconnection OSI YD/T 1280-2003 222 操作维护中心 OMC OMC YD/T 1079-2000 223 帧失步秒 Out-of-Frame Seco

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电信英语

电信术语(11)

序号中文英文术语解释缩写来源 201 光回损 Optical Return Loss ORL YD/T 1274-2003 202 光信噪比 Optical Signal to Noise Ratio OSNR YD/T 1274-2003 203 光监控通路 Optical Su

发表于:2019-02-01 / 阅读(136) / 评论(0)

电信英语

2018年CRI Tibet to have universal fibre-optical broadband service

China's Tibet Autonomous Region is about to achieve a universal coverage of fibre-optical broadband service ahead of its schedule. As China further rolled out its universal broadband project, Tibet's broadband service is looking to reach 98% of admin

发表于:2019-02-14 / 阅读(124) / 评论(0)

2018CRI中国国际广播电台

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A broken gong does not sound

a large secretion of milk