用mp3背四级单词32

efficiency-效率,功效 elaborate -精心计划的,详尽的 elastic -橡皮圈,松紧带 elbow -肘,肘部 elderly-较老的,年长的 elect -选举,推举 electrical -电的,电气科学的 electron-电子 electronic -电子的 elegant -优美的,文雅的 element -元素,要素 elementary-基本的,

新东方赵丽词汇课堂 Lesson 136

16. The coming of the railways in 1830s____ our society and economic life. A. transformed B. transported C. transferred D. transmitted economy 经济 economic 经济的 economical 节俭的 economics 经

英文杂志-Physics

In the square outside the British Library in London is a sculpture of Sir Isaac Newton - The first man who asked why apples seem always to fall towards the centre of the earth. Maybe they chose it for the spot because it shows a great scientist at wo

人教版小学英语三年级上--Unit 2 This is my Pencil

Unit 2 This is my Pencil. [00:02.49]单元二 这是我的铅笔。 [00:04.99]Lesson 7 [00:06.61]第七课 [00:08.23]1.Just speak [00:10.00]1.请讲话 [00:11.78]Hi,LiYan. This is Kate. This is LiYan. [00:14.81]喂，李燕。这是凯特。这是李燕

新目标初中英语七年级上 Unit 2 Is this your pencil? 课文 -SELF CHECK

[00:02.97]Unit 2 Is this your pencil? [00:07.29]SELF CHECK [00:09.56]1.Key word check. [00:14.05]Check () the words you know. [00:17.28]backpack notebook computer game baseball [00:27.22]pen ruler book pencil case dictionary [00:40.70]eraser ring wat

新目标初中英语七年级上 Unit 2 Is this your pencil? 课文 -Section A

[00:00.00]Unit 2 Is this your pencil? [00:06.18]Section A [00:08.26]1b listen and number the conversations[1-3]. [00:16.39]Conversation 1 [00:18.57]Is this your ruler? [00:20.49]No,it isn't. [00:22.13]It's her ruler. [00:24.87]Conversation 2 [00:26.9

TED演讲：气味背后的科学(8)

OK, great, we smell vibrations. How? All right? 好吧，我们闻到的是震动。怎么闻到呢？ Now when people ask this kind of question, they neglect something, which is that physicists are really clever, unlike biologists. 当人们问这个问

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

VOA慢速英语2017 三位化学家获得诺贝尔化学奖

Three Scientists Win Nobel Prize in Chemistry Three scientists have won the Nobel Prize for chemistry for their work to simplify and improve the imaging of biomolecules. 三位科学家因为在简化和改善生物分子成像方面的成就获得了诺

闭着眼睛飘单词 四级词汇32

[0:0]efficiency效率,功效 [0:12.1950]elaborate elastic elbow elderly精心计划的,详尽的 橡皮图,松紧带 肘,肘部 较老的,年长的 [1:2.6076]elect electrical electron选举,推选 电的,电气科学的 电子 [1:41.1372]electronic elegant element elementary [2:36.2790]el

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

AGRICULTURE REPORT - Irradiated Meat

AGRICULTURE REPORT December 17, 2002 — Irradiated Meat This is the VOA Special English Agriculture Report. The United States government has approved methods of destroying bacteria in meat by using r

英语词汇分类：核能

A-bomb, atomic bomb 原子弹 absorption 吸收 to accelerate 加速 accelerating chamber 加速室 accelerator 加速器 synchrocyclotron 同步回旋加速器 synchrotron 同步加速器 betatron 电子

微电子辞典-5

Early effect 厄利效应 Early failure 早期失效 Effective mass 有效质量 Einstein relation(ship) 爱因斯坦关系 Electric Erase Programmable Read Only Memory(E2PROM) 一次性电可擦除只读

微电子辞典-2

Background carrier 本底载流子 Background doping 本底掺杂 Backward 反向 Backward bias 反向偏置 Ballasting resistor 整流电阻 Ball bond 球形键合 Band 能带 Band gap 能带间隙 Ba

万物简史 第230期:马斯特-马克的夸克(2)

As physicists built bigger and more ambitious machines, 随着物理学家建造越来越大、越来越雄心勃勃的机器， they began to find or postulate particles or particle families seemingly without number: 他们开始或推断出似乎永无

万物简史 第206期:威力巨大的原子(20)

What this means in practice is that you can never predict where an electron will be at any given moment. You can only list its probability of being there. In a sense, as Dennis Overbye has put it, an electron doesnt exist until it is observed. Or, pu

万物简史 第205期:威力巨大的原子(19)

Finally, in 1926, Heisenberg came up with a celebrated compromise, producing a new discipline that came to be known as quantum mechanics. At the heart of it was Heisenberg's Uncertainty Principle, which states that the electron is a particle but a pa

万物简史 第200期:威力巨大的原子(14)

Neutrons and protons occupy the atom's nucleus. The nucleus of an atom is tinyonly one millionth of a billionth of the full volume of the atombut fantastically dense, since it contains virtually all the atom's mass. As Cropper has put it, if an atom

双语有声阅读：显微技术

The Microscopic Technique Each advance in microscopic technique has provided scientists with new perspectives on the function of living organisms and the nature of matter itself. The invention of the visible light microscope late in the sixteenth cen