无束缚粒子,自由粒子

unbound particle的用法和样例：

例句

In our free particle example, it turns out that it is impossible to find a wavefunction that is an eigenstate of both position and momentum.我们以自由粒子为例，找到既有位置又有动量的波函数是不可能产生的。

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

发表于:2018-12-07 / 阅读(183) / 评论(0)

英文杂志-Magazine

The Excitement of Three-Part Phrasal Verbs

The Excitement of Three-Part Phrasal Verbs Popular music can teach you a lot about the English language. You may not realize it, but musicians are actually teaching you about English grammar in each song they perform. Consider this song by the famous

发表于:2018-12-08 / 阅读(184) / 评论(0)

2016年VOA慢速英语(九)月

考研英语长难句讲解第344期

1998 翻译延伸 5、Odd though it sounds, cosmic inflation is a scientifically plausible consequence of some respected ideas in elementary particle physics, and many astrophysicists have been convinced for the better part of a decade that it is tru

发表于:2018-12-17 / 阅读(161) / 评论(0)

考研英语长难句讲解

雅思听力场景词汇:化学词汇

雅思听力场景词汇:化学词汇在雅思听力考试场景中，化学相关的场景的词汇较为生涩，平时生活中可能也运用得比较少，以下的词汇供大家参考喔。 molecule 分子 particle 粒子 ion 离子 particle

发表于:2018-12-19 / 阅读(217) / 评论(0)

雅思英语

SSS 2008-02-25

Transcript This is Scientific American's 60-Second Science, I am Cynthia Graber.This will just take a minute. Physicists at the Brookhaven National Laboratory have been able to send information ahead of particle beams racing at nearly the speed of li

发表于:2018-12-24 / 阅读(219) / 评论(0)

Scientific American(二)月

【英音模仿秀】上帝粒子

模仿文本：Deep underground here on the Swiss-French border, a momentous scientific discovery earlier this year had tabloid headline writers for claiming the discovery of the God particle in the subatomic shrapnel from a man-made Big Bang. But wa

发表于:2018-12-28 / 阅读(146) / 评论(0)

英音模仿秀

CNN 2009-11-16

It was supposed to be the greatest science experiment ever, and it's certainly the most expensive. The large hadron collider designed to recreate the Big Bang theory with colliding particles has so far cost nearly 10 billion dollars and counting. Sci

发表于:2019-01-07 / 阅读(181) / 评论(0)

cnn2009年(十一)月

SSS 2008-10-07

This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? The 2008 Nobel Prize in physics goes to an American and two Japanese scientists for work related to symmetry in particle physics. In the early 1960s, Yoichiro Nambu of

发表于:2019-01-08 / 阅读(179) / 评论(0)

Scientific American(十)月

SSS 2008-04-10

This is Scientific American's 60-Second Science, I'm Steve Mirsky, got a minute? Every Star Trek fan knows theres matter and antimatter, but why is there apparently so much more matter than antimatter？Scientific American's JR Minkel: Two recent exp

发表于:2019-01-08 / 阅读(189) / 评论(0)

Scientific American(四)月

VOA标准英语2011--Fermilab Scientists Optimistic About Finding Higgs Boson Particle

Fermilab Scientists Optimistic About Finding Higgs Boson Particle Scientists at the CERN laboratory in Geneva, Switzerland say they are encouraged by new data suggesting their Large Hadron Collider, the world's most powerful atom-smasher, is one step

发表于:2019-01-13 / 阅读(177) / 评论(0)

VOA标准英语2011年(十二月)

经济学人17:想象的殿堂 House of dreams

Books and Arts; Quantum physics 文艺；量子物理学 House of dreams；Scientists race to explain why the Higgs boson matters 想象的殿堂；科学家竞相解释为什么希格斯玻色子至关重要 Higgs Force: The Symmetry-Breaking Force

发表于:2019-01-26 / 阅读(244) / 评论(0)

经济学人文艺系列

万物简史第16期:如何营造一个宇宙(8)

The Big Bang theory isn't about the bang itself but about what happened after the bang. Not long after, mind you. By doing a lot of math and watching carefully what goes on in particle accelerators, scientists believe they can look back to 10-43secon

发表于:2019-01-29 / 阅读(174) / 评论(0)

万物简史

夏洛的网第123期:会议(4)

How about 'Pig Supreme'? asked one of the lambs. 细皮肥猪怎么样？一只小羊问道。 No good, said Charlotte. It sounds like a rich dessert. 不好，夏洛说，这听上去像油腻的菜名。 How about 'Terrific, terrific, terrific'? as

发表于:2019-01-29 / 阅读(176) / 评论(0)

夏洛的网

空气污染能引发心脏病

43 空气污染能引发心脏病 DATE=7-6-01 TITLE=ENVIRONMENT REPORT - Pollution Linked to Heart Attacks BYLINE=Cynthia Kirk （Start at 59

发表于:2019-01-30 / 阅读(328) / 评论(0)

自然探索

中国计划建最大超级对撞机

China's proposed supercollider will be twice the size of the Large Hadron Collider or CERN in Switzerland that helped discover the Higgs Boson or the God Particle in 2012. It will also serve as a symbol of the country's rise as a global superpower by

发表于:2019-02-07 / 阅读(153) / 评论(0)

英语新闻

Two million die of air pollution each year

GENEVA, Sept. 26 (Xinhua) -- Two million people worldwide are estimated to die from air pollution each year, the Geneva based World Health Organization (WHO) said in its air quality report published on Monday. According to data collected by the WHO f

发表于:2019-02-08 / 阅读(172) / 评论(0)

英语新闻

夏说英语新闻晨读第113期:川普锁定党内提名

本期内容： Donald Trump gained the 1,237 delegates needed for the Republican presidential nomination, as a small group of unbound delegates told the Associated Press they would support him at the partys convention in Cleveland in July. The tycoo

发表于:2019-02-13 / 阅读(142) / 评论(0)

夏说英语新闻晨读

Researchers find "lonely planets"

BEIJING, May 20 (Xinhuanet) -- Scientists have discovered a Jupiter-sized exoplanet that is completely unbound from a host star, according the scientific journal Nature published Thursday. The research was conducted by astrophysicists from Osaka Univ

发表于:2019-02-17 / 阅读(142) / 评论(0)

英语新闻

瑞士大型强子对撞机重启程序

Scientists with the European Organization for Nuclear Research, or CERN, have begun working again after a two-year hiatus. The Large Hadron Collider was shutdown in 2013 for a major refit. It's allowed for its power to be doubled, enabling scientists

发表于:2019-02-18 / 阅读(140) / 评论(0)

英语新闻

VOA慢速英语2012 IN THE NEWS - Scientists May Have Found 'God Particle'

IN THE NEWS - Scientists May Have Found 'God Particle' 新闻报道 - 科学家们可能发现了上帝粒子 This is IN THE NEWS in VOA Special English. 这里是美国之音慢速英语新闻报道。 This week, scientists in Switzerland reported a

发表于:2019-02-18 / 阅读(198) / 评论(0)

2012年VOA慢速英语(七)月

最新学习文章

热门学习文章

热门标签

英语听力 VOA标准英语 VOA 英语歌曲口语听力提高听力材料听力教程英语学习 NPR 英语口语 VOA慢速英语美国国家电台儿童英语 VOA英语小学英语 cnn VOA常速英语标准英语英文歌曲听电影学英语英语单词英文电影慢速英语 CRI 美联社新闻美国有线新闻加州分级澳洲新闻流行歌曲常速英语 ABC新闻快递疯狂英语英语读物听力棚车少年经济学人英语词汇商务英语 VOA双语新闻 BBC 中国电台大学英语 Treasures 加州语文 BBC英语英语听力网站 VOA英语教学词汇万花筒 SSS VOA英语听力 AP 新概念分级英语英语广播听力精选英语播客英文绘本 TED演讲赖世雄英语MP3 CCTV9英语新闻 lesson 英语新闻初中英语学英语英语语法历史上的今天英文广播剧英语游戏原版英语小说英语有声读物书虫英语牛津英语读物访谈录新闻一分钟考研英语英语每日在线听新闻 Us 新概念英语地道英语单词第二册自然百科高中英语 sports 实用英语 MP3听力辛沛沛 ESL英语第一册英语每日一句 unit 新东方 GRE 每日一词 BBC听力

学英语单词

carboloy tetrachloride

Cleidion spiciflorum