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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(170) / 评论(0)

Scientific American(五)月

新视野大学英语视听说 Unit 9-13

A, greet B and ask what he is doing. Hi, Dave. Whatre you doing? Seems youre doing editing work. B, respond to A. Well, I just downloaded an essay from the Net, and have got to make some changes for my literature class. A, make comments on Bs practic

发表于:2018-12-29 / 阅读(136) / 评论(0)

新视野大学英语：视听说教程 1

Horizon - Life On Mars 火星生命 - 11

One of these wavelengths corresponds to hydrogen, another wavelength would be iron. Another wavelength would be oxygen. And so you go to the part of the spectrum you are interested in and you see you'

发表于:2019-01-02 / 阅读(173) / 评论(0)

火星生命

电信专业英英词典D-1

DAMA - Stands for Demand-Assigned Multiple Access. This is a way to instantaneously assign telephony channels in a transponder according to the immediate traffic demands. Dash - This is the the charac

发表于:2019-01-03 / 阅读(155) / 评论(0)

电信英语

电信专业英英词典D-2

Delay - This is the wait time between to specific events, and regarding satellite communications, it is the time it takes for a signal to go from the transmission station up to orbit and through the s

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电信英语

电信专业英汉词典d1

digital revolution 数字革命 digit 数字 (码位 )，数位 digital economy 数字经济 digital earth 数字地球 digital subsistene 数字化生存 digital museum 数字博物

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电信英语

电信专业英英词典P-2

PPSN public packet switched network Premises Distribution System (PDS) PDS is the transmission network inside a building or among a group of buildings, for example an office park or a campus. PDS is u

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电信英语

电信专业英英词典Q

发表于:2019-01-03 / 阅读(145) / 评论(0)

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I-1

I-MAC isonchronous media access controller IDN integrated digital network IEC International Electrotechnical Commission Impairments Impairments is the (e.g., transmission channel and signal impairment

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电信英语

电信专业英英词典M-2

Microwave In telecommunications, microwaves are frequencies above 1 GHz. MIPS million instructions per second Modems (MOdulator/DEModulators) Modems are devices that transform digital signals generate

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电信英语

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(158) / 评论(0)

电信英语

电信专业英英词典F-1

Fade - This is a reduction in the received signal. It is caused by absorption, refraction, or reflection. Fax - This is a shortening of Facsimile, and it refers to one fax machine sending a digital re

发表于:2019-01-03 / 阅读(126) / 评论(0)

电信英语

电信专业英英词典D-4

D type Channel Bank A D type channel bank is channel termination equipment used for combining (multiplexing) individual analog channel signals on a time division basis. D type channel banks provide in

发表于:2019-01-03 / 阅读(224) / 评论(0)

电信英语

电信专业英英词典A-2

Analog - Transmitting information that is characterized by continuously variable quantities (such as with AM or FM). This is different from digital transmission, which is characterized by discrete bit

发表于:2019-01-03 / 阅读(212) / 评论(0)

电信英语

电信英语及其缩略语解释-18

DOD Direct Outward Dialing 直拨外线 DOS Disk 0perating System 磁盘操作系统 DOV Data Over Voice 话上数据 DP Data Processing 数据处理 DP Detection Point 检测点，探测点 DP Dial／

发表于:2019-01-03 / 阅读(177) / 评论(0)

电信英语

雅思分类词汇：环境资源相关(二十三)

环境信息ENVIRONMENTALINFORMATION 信息基础设施Informationinfrastructure 图书馆Library 信息中心Informationcentre 数据中心Datacentre 培训中心Trainingcentre 因特网服务提供商

发表于:2019-02-25 / 阅读(186) / 评论(0)

英文语法词汇

VOA慢速英语--爱沙尼亚政府欲实现100%无纸化工作

Estonian Government Aims to End Paperwork Three-day-old Oskar Lunde sleeps in a small bed at an Estonian hospital. Across the room, his father turns on a laptop computer. Now we will register our child, Andrejs Lunde says, as he lifts his identificat

发表于:2019-02-26 / 阅读(200) / 评论(0)

2019年VOA慢速英语(一)月

爆笑英语口语第15期:手机不行了

Language Points My phone's dead. My phone died. bad/poor reception I've got bad reception here. I'm losing you data，I'm out of data. MB读作megs，GB读作gigs，I have 5 per month. My phone keeps dropping calls. no signal I've got no signal/recep

发表于:2019-02-27 / 阅读(199) / 评论(0)

爆笑英语口语

TED演讲:科技为人道主义带来的变化(4)

In Nigeria, 在尼日利亚 open-source, open-source SMS tools are being used by the Red Cross community workers 红十字会的工作人员也在使用开放的短信工具 to gather information from the local community 他们从当地社区里收集资

发表于:2019-03-04 / 阅读(171) / 评论(0)

TED演讲教育篇

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