光发射电子显微镜

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

发表于:2018-12-07 / 阅读(198) / 评论(0) 分类 英文杂志-Magazine

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

发表于:2018-12-24 / 阅读(222) / 评论(0) 分类 Scientific American(九)月

【今日基础词】 Improvement 【Transcript】 A: I saw a photo on internet just now; its a photo of a big family. B: There must be many people in it. A: Yeah, 150 members of Gao in De Chang county took the photo. B: How great the family is! A: I

发表于:2018-12-30 / 阅读(220) / 评论(0) 分类 听基础单词练听力

By Jeri Watson and Caty Weaver Broadcast: December 26, 2004 (MUSIC) VOICE ONE: Im Steve Ember. VOICE TWO: And Im Faith Lapidus with People in America in VOA Special English. Today we tell about five special people who died during the past year. We st

发表于:2019-01-01 / 阅读(208) / 评论(0) 分类 名人轶事

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

发表于:2019-01-03 / 阅读(300) / 评论(0) 分类 2017年VOA慢速英语(十)月

By Peter Fedynsky Washington, DC 17 February 2006 watch G8 Democracy report Russia recently assumed the rotating presidency of the G-8, prompting a discussion in the United States about whether that c

发表于:2019-01-13 / 阅读(233) / 评论(0) 分类 2006年VOA标准英语(二月)

iPhone Becomes Low Cost Microscope The Apple iPhone can be used for lot of things making calls, playing games and sending pictures, video and text. Scientists say it also can be converted into a low-cost microscope to detect worm-related infections i

发表于:2019-01-14 / 阅读(192) / 评论(0) 分类 VOA标准英语2013年(三月)

[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

发表于:2019-01-16 / 阅读(306) / 评论(0) 分类 闭着眼睛飘单词 四级词汇

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

发表于:2019-01-17 / 阅读(199) / 评论(0) 分类 TED演讲教育篇

天文学 astronomy 天文学 astronomical 天文的 astronomical observatory 天文台 astronomer 天文学家 astrophysics 天文物理学 astrology 占星学 pseudoscience 伪科学 cosmos(universe) 宇宙 cosmology 宇宙学 infinite 无限的 co

发表于:2019-01-18 / 阅读(175) / 评论(0) 分类 托福英语

By Anjana Pasricha New Delhi 13 May 2007 Villagers are dwarfed by giant windmills built by the Danish Development Agency in northern Philippines (File) The Asian Development Bank is helping to finance a 100-megawatt wind energy plant in India as part

发表于:2019-01-31 / 阅读(190) / 评论(0) 分类 2007年VOA标准英语(五月)

By Kayla Rosenfeld Honolulu 01 February 2008 Officials from the world's 16 largest greenhouse gas emitters gathered in Hawaii this week to discuss how to curb global climate change. Kayla Rosenfeld reports from Honolulu the goal was to advance the ro

发表于:2019-01-31 / 阅读(206) / 评论(0) 分类 VOA常速英语2008年(二月)

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

发表于:2019-02-03 / 阅读(217) / 评论(0) 分类 英文语法词汇

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

发表于:2019-02-05 / 阅读(212) / 评论(0) 分类 实用英语

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

发表于:2019-02-05 / 阅读(184) / 评论(0) 分类 实用英语

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

发表于:2019-02-17 / 阅读(181) / 评论(0) 分类 万物简史

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

发表于:2019-02-17 / 阅读(192) / 评论(0) 分类 万物简史

EXPLORATIONS - From a Photo of War, a Statue to Remember MARIO RITTER: Welcome to the VOA Special English program EXPLORATIONS. Im Mario Ritter. July fourth, Independence Day in the United States, is a time of celebration. Friends and family across t

发表于:2019-02-19 / 阅读(302) / 评论(0) 分类 2012年VOA慢速英语(七)月

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

发表于:2019-02-25 / 阅读(217) / 评论(0) 分类 双语有声阅读

台湾籍旅美老师今天交给我们的句子是: Blood is the tissue that not only carries cells that transport oxygen, for example, the red blood cells, or fights infectious diseases, but it also carries messenger molecules, hormone-like facto

发表于:2019-03-05 / 阅读(203) / 评论(0) 分类 留美老师带你每日说英文
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