模拟信号

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(92) / 评论(0)

Scientific American(五)月

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

发表于:2018-12-31 / 阅读(77) / 评论(0)

365个英语简短小故事

Earth and Sky:Plant Signals 植物的语言

Plant Signals 植物的语言 Can plants smell and taste in the same way that animals do? Can they talk to each other and to insects? Learn how scientists hope to unravel some of the mysteries of plant senses -- on today's Earth and Sky. JB: This is Eart

发表于:2019-01-02 / 阅读(150) / 评论(0)

(科普英语)Earth and Sky

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

发表于:2019-01-03 / 阅读(77) / 评论(0)

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(86) / 评论(0)

电信英语

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

发表于:2019-01-03 / 阅读(67) / 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(140) / 评论(0)

电信英语

VOA标准英语2008年-Monkeys Use Brain Signals To Operate Robotic Ar

By Jessica Berman Washington 28 May 2008 Monkeys have successfully operated robotic arms to feed themselves with human-like precision, activating a mechanical device with signals from their brain. Researchers say the technique could eventually be use

发表于:2019-01-09 / 阅读(70) / 评论(0)

VOA标准英语2008年（五月）

高中英语人教版高二下讲解11

[00:42.81]What do you usually say if you dial a wrong number? [00:48.35]I'm sorry,I think I dialled the wrong number. [00:58.38]What does Steve ask Pippa to do? [01:02.43]To go to a lecture [01:07.29]When and where is the lecture going to be given? [

发表于:2019-01-10 / 阅读(234) / 评论(0)

高中英语人教版高二

高中英语人教版高二下11

[00:04.78]Lesson 89 1 Dialogue [00:11.05]STEVE:Hello.Can I speak to Pippa,please? [00:13.27]喂!我可以找彼帕接电话吗? [00:15.49]VOICE:There's no Pippa here.This is 8686087. [00:19.51]这里没有彼帕这个人,这里的号码是8686087. [0

发表于:2019-01-10 / 阅读(219) / 评论(0)

高中英语人教版高二

VOA慢速英语2015 南非与黑胶唱片的情缘

AS IT IS 2015-05-12 South African's Love Affair with Vinyl Records 南非与黑胶唱片的情缘 Benjy Mudie owns Vinyl Junky. He flips through records inside his Johannesburg store. His vinyl albums are much more expensive than CDs or MP3s - digita

发表于:2019-01-12 / 阅读(50) / 评论(0)

2015年VOA慢速英语(五)月

英国人看电视时间增多每天超四个小时

Britons have been watching almost 2-1/2 hours more television a week this year as cash-strapped people stay at home more -- and because there's more to watch, figures showed on Tuesday. Official statistics from The Broadcasters' Audience Research Boa

发表于:2019-01-15 / 阅读(78) / 评论(0)

实用英语

TED演讲:世上最难翻译的词之一

Which is the hardest word to translate in this sentence? 哪一个单词是这个句子中最难翻译的？ Know is easy to translate. know是很容易翻译的。 Pep rally doesn't have a direct analog in a lot of languages and cultures, but can be

发表于:2019-01-17 / 阅读(67) / 评论(0)

TED演讲教育篇

乔布斯传第25期:乔布斯和蓝盒子(1)

The Blue Box 蓝盒子 The ultimate combination of pranks and electronicsand the escapade that helped to create Applewas launched one Sunday afternoon when Wozniak read an article in Esquire that his mother had left for him on the kitchen table. 恶作

发表于:2019-01-22 / 阅读(74) / 评论(0)

乔布斯传

VOA慢速英语20060815b

SCIENCE IN THE NEWS - Rethinking the Personal Computer in a World That Centers on the InternetBy Caty Weaver and produced by Mario Ritter Broadcast: Tuesday, August 15, 2006 VOICE ONE: This is SCIENCE

发表于:2019-01-30 / 阅读(102) / 评论(0)

2006年慢速英语（八）月

微电子辞典-1

Abrupt junction 突变结 Accelerated testing 加速实验 Acceptor 受主 Acceptor atom 受主原子 Accumulation 积累、堆积 Accumulating contact 积累接触 Accumulation region 积累区 Accum

发表于:2019-02-05 / 阅读(78) / 评论(0)

实用英语

儿童智能手表抢滩节日玩具市场

当很多成人还在等待苹果的iWatch上市，孩子们已经可以拥有自己的智能手表了。Kidizoom推出一款名为Vtech的儿童智能手表准备抢滩节日玩具市场。这款儿童智能手表售价60美元，屏幕1.4英寸，可

发表于:2019-02-06 / 阅读(166) / 评论(0)

阅读空间

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

发表于:2019-02-06 / 阅读(96) / 评论(0)

阅读空间

科技英语-常用句型

常用句型科技文章中经常使用若干特定的句型，从而形成科技文体区别于其他文体的标志。例如Itthat结构句型；被动态结构句型；结构句型，分词短语结构句型，省略句结构句型等。举例如下

发表于:2019-02-18 / 阅读(75) / 评论(0)

英语口译

TED演讲:科技为人道主义带来的变化

The humanitarian model has barely changed since the early 20th century. 人道主义的模型自从20世纪初期就几乎没有改变过 Its origins are firmly rooted in the analog age. 它的起源在模拟时代就根深蒂固了 And there is a ma

发表于:2019-03-04 / 阅读(101) / 评论(0)

TED演讲教育篇

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