科学美国人60秒 SSS This Cell Phone Needs No Battery

This Cell Phone Needs No Battery 不用电池的新型手机？ A dying battery is a huge annoyance for cell phone users. But for engineers? It's inspiration. Can we design a smartphone which can make a phone call and have a conversation without the

365个英语简短小故事- 56. A Year with No TV

Starting in February 2009, broadcasts of all TV signals will be digital, replacing current analog signals. For people who have cable or satellite TV, this is a non-issue, because their reception will not be affected. But people who use rabbit ears or

电信专业英英词典C-7

Channel A channel is a single communications path in a transmission medium connecting two or more points in a network, each path being separated by some means; e.g., spatial or multiplex separation, s

电信专业英英词典C-8

Codec Codec is a contraction of coder and decoder; a device that encodes analog signals into digital signals, for transmission through a network in digital format, and decodes received digital signals

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

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

电信专业英英词典Q

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

电信专业英英词典F-4

Frame In time division multiplexing systems, Frame is a sequence of time slots each containing a sample from one of the channels carried by the system. The frame is repeated at regular intervals, (nor

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

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

电信英语及其缩略语解释-13

DCC Data Country Code 数据国家号码(3位) DCC Digital Cross Connect 数字交叉连接 DCCE Digital Cell Center Exchange 数字小区中心交换机 DCCH Dedicated Control CHannel 专用控制信道

2006年VOA标准英语-Television Technology Enters New Era

By Craig McCulloch Vancouver 13 May 2006 In February of 2009 all television stations in the United States are required to convert to digital transmission. This move will bring an end to traditional an

英语杂谈：43 Kid-friendly Digital Thermometers

Hi, Im Becky Worley and this is Good Stuff. Its flu season and were more vigilant than ever about all the flues that are making around, when your kids are sick, you take their temperature, but thats easier said than done. The words Rattle thermometer

VOA标准英语2010年-Technology Keeps Astounding and Amazin

But what's new and hot today will be antiquated before you know it Ted Landphair | Washington, DC 23 June 2010 Millions of American adults might recall phonograph records, cameras with flashbulbs and telephones with rotary dials, but their children w

购物英语口语一本通 Unit23:买手表(2)

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美国习惯用语:355 the rubber chicken circuit

今天我们要讲几个在美国总统大选的竞选阶段常会用到的习惯用语。美国总统大选每四年举行一次。在大选年的前一年,准备竞争本党总统候选人提名的人士就已经在各州积极展开竞选活动了，

2018年CRI China's digital television service promotes connectivity in Africa

Promoting connectivity and cooperation in informational communication between China and Africa is high on the agenda of this year's FOCAC Beijing Summit. The collaboration is being pushed greatly by a free digital television project of China in rural

从iPhone7说起：为什么耳机接口必须死？

To the surprise of exactly no one, Apples new generation of iPhones will not include a standard 3.5mm headphone input. The decision signals the demise of an audio port thats been used for more than 100 yearsand honestly, its about time. The death of

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