TED演讲:原子究竟有多小?(2)

So if you popped open the blueberry and were searching for the nucleus 如果你在蓝莓的内部搜索原子核，结果是一无所获。 You know what? It would be invisible. It's too small to see! 知道为什么吗？因为我们看不到它！它

赖世雄学英语第四册 lesson 4

[00:00.00]Lesson 4 Atom [00:01.95]原子 [00:03.89]The really strange thing about atoms is that most of us will never see one. [00:08.87]原子最奇特之处在于绝大多数人永远也无法看到它。 [00:13.84]Atoms are so small that it's impo

深圳小学（深港版）第七册lesson7

[00:00.00] Unit 7 Eating out [00:04.00]A Pat's mother andthe children are outside a restaurant. [00:10.06]Listen ,look and say. [00:14.21]Koko,are you hungry? [00:18.26]Well,yes, a little. [00:22.31]Do you like sandwiches? Yes,I do. [00:27.59]Are you

沪教版牛津小学英语四年级上--Module 3 Places and

Module 3 Places and activities [00:07.61]模块 3 安置和活动 [00:11.05]Unit 1 In the school [00:13.68]单元一 在学校 [00:16.30]Look and learn [00:18.48]看并且学习 [00:20.66]11 eleven 12 twelve 13 thirteen 14 fourteen [00:27.69]11 十一

SSS 2011-09-27

This is Scientific American's 60-Second Science. I'm Sophie Bushwick. Got a minute? The shortest distance between two points may be a straight line, but try telling that to electrons: when current flows down a wire, these particles zig and zag, movin

第83期: kyat, pact, navy, objective, packet

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 kyat [ kjB:t ] Kyat is a basic unit o

英语听力文摘 English Digest 655 富兰克林与他的毛皮实验

Ben Franklin And A Very Furry Situation When they hear the name Ben Franklin, many folks think of the Declaration of Independence, the Continental Congress and things like that. Not as many people remember that Franklin was an inventor . . . and a go

60秒科学:Forcing Electrons into Superconducting Line

Forcing Electrons into Superconducting Line In a study in the journal Nature researchers created a pseudo gap, in which electrons in superconducting materials line up just before flowing resistance-free. Sonya Buyting reports Imagine a world with lev

电信专业英英词典P-1

P-MAC packet media access controller PAD packet assembler-disassembler PCB printed circuit board PDS premises distribution system Personal Communications Personal communications provides at least one

电信英语及其缩略语解释-23

EOB End Of Block块结束 EOC Embedded Operation Channel 嵌入式操作通道 EOD Education On Demand 教育点播 EOF End Of file 文件结束 EOF End Of Frame 帧结束 EOI End Of Image 图像结束

专业术语-GPRS

General Packet Radio Service (GPRS) is a mobile data service available to users of GSM mobile phones. It is often described as

TED演讲:一项关于电动车的大胆计划(4)

You, today, buy gasoline miles. And we created electric miles. 现在大家买的是汽油里程。我们就创造电子里程。 And the price of electric miles ends up being a very interesting number. 电子里程价钱加起来是个有趣的数字。

TED演讲:一项关于电动车的大胆计划(1)

So how would you run a whole country without oil? 怎么让一个国家在没有用石油的情况下运转？ That's the question that sort of hit me in the middle of a Davos afternoon about four years ago. 四年以前在Davos的一个下午，这个

沪教版牛津小学英语六年级下--unit 4 How do I

unit 4 How do I make it? [00:05.52]单元四 我怎样做它？ [00:07.65]Look and learn [00:09.13]看并且学习 [00:10.61]I'd like to make a pizza. [00:12.73]我不喜欢做比萨饼。 [00:14.86]There's a cookery programme on TV at twelve o'clock

VOA慢速英语 2008 1207

VOICE ONE: I'm Phoebe Zimmermann. VOICE TWO: And I'm Steve Ember with People in America in VOA Special English. Today we tell about a man who made possible one of the most important communications devices ever created -- television. His name was Phi

TED演讲:为什么玻璃是透明的(2)

But this still doesn't explain why light is able to pass through glass rather than being absorbed as with most solids. 但是这还是不能解释为什么光可以穿透玻璃而不是像其他大多固体那样被吸收。 For that, we need to go a

PEOPLE IN AMERICA - Philo Farnsworth

PEOPLE IN AMERICA - Philo Farnsworth By Paul Thompson Broadcast: Sunday, June 06, 2004 (MUSIC) VOICE ONE: I'm Phoebe Zimmermann. VOICE TWO: And I'm Steve Ember with People in America in VOA Special En

万物简史 第202期:威力巨大的原子(16)

It was while puzzling over this problem that Bohr was struck by a solution and dashed off his famous paper. Called On the Constitutions of Atoms and Molecules, the paper explained how electrons could keep from falling into the nucleus by suggesting t

万物简史 第198期:威力巨大的原子(12)

Let us pause for a moment and consider the structure of the atom as we know it now. Every atom is made from three kinds of elementary particles: protons, which have a positive electrical charge; electrons, which have a negative electrical charge; and

英国人都在什么时候说Sorry？

温文尔雅的英国绅士，彬彬有礼的英国淑女，每天Sorry和Thank you 绝不离口。他们到底犯了什么错？要每天跟人家说抱歉！小编目测，他们犯的错还真不少： 1. Walking into someone. 撞到别人。 2. N