铌酸锂积体光学质子交换

They Did It With Mirrors!

They Did It With Mirrors! You can’t stand in front of the paintings of the old masters and not wonder, how did 1) Frans Hals make that lace seem so real? How did 2) Van Dyck make his armor so gleami

发表于:2018-11-28 / 阅读(229) / 评论(0)

疯狂英语2003年

【英语语言学习】双相型障碍

Hi, it's the All in the Mind podcast, I'm Lynne Malcolm. Today we go to Ireland to hear one man's story of living with bipolar disorder. Ian is in his mid-fifties, and despite his illness he has an enviable, almost idyllic life with his wife and thre

发表于:2018-12-04 / 阅读(131) / 评论(0)

听一分钟英文-I

小学综合英语1A--INTEGRATED PRIMARY ENGLISH 1A

INTEGRATED PRIMARY ENGLISH 1A [01:35.19]The alphabet [01:43.29]Aa apple [01:48.46]Bb baby [01:52.90]Cc carrot [01:57.16]Dd door [02:01.31]Ee egg [02:05.99]Ff flower [02:10.43]Gg grass [02:15.60]Hh hat [02:20.46]Ii ice cream [02:25.32]Jj jar [02:29.68

发表于:2018-12-13 / 阅读(235) / 评论(0)

小学综合英语1A

走进剑桥大学第8期:牛顿的苹果树

Newtons Apple Tree 牛顿的苹果树 Newton was an English physicist and mathmatician,and was the greatest scientist in his era. 牛顿是一位英国物理学家和数学家，也是他那个时代最卓越的科学家之一。 Isaac Newton was bor

发表于:2018-12-18 / 阅读(136) / 评论(0)

走进剑桥大学

【英语语言学习】滑板车“火”起来了吗

SCOTT SIMON, HOST: One of the hottest gifts of the season is a little too hot, hot enough to catch fire. Hoverboards have been burning up because of problems with their lithium-ion batteries. And lithium-ion batteries are in a lot of things these day

发表于:2018-12-28 / 阅读(123) / 评论(0)

英语语言学习

美国发明家的电池技术或改变世界

American inventor John Goodenough first started working on battery technology more than 40 years ago. Goodenough actually co-invented lithium-ion batteries in 1980. This eventually led to a revolution in the electronics industry because those devices

发表于:2019-01-02 / 阅读(122) / 评论(0)

2017年VOA慢速英语(五)月

VOA慢速英语--Demand for Lithium Creates ‘Water War’ in Chile

Parts of Chile are facing a growing water crisis. The Reuters news agency reports the government is taking steps to protect the countrys water supplies from mining operations. But for many years, the Chilean government approved water extraction right

发表于:2019-01-03 / 阅读(148) / 评论(0)

2018年VOA慢速英语(九)月

VOA慢速英语--科学家研发可永久循环使用电池

Batteries That Last Forever Could Be Near 科学家研发可永久循环使用电池 We all have daily problems with technology, but how many of us can fix them? Mya Le Thai is a scientist studying at the University of California, Irvine. She recentl

发表于:2019-01-12 / 阅读(131) / 评论(0)

2016年VOA慢速英语(五)月

VOA标准英语2011--Israeli-Palestinian Prisoner Exchange Brings Joy, Fuels Debate

Israeli-Palestinian Prisoner Exchange Brings Joy, Fuels Debate Tuesday's exchange of hundreds of Palestinian prisoners for Israeli soldier Gilad Shalit has brought happiness to many in the region - but the underlying confrontations remain. Israel's r

发表于:2019-01-14 / 阅读(97) / 评论(0)

VOA标准英语2011年(十月)

英闻天下——409 Boeing: Dreamliner to Fly Again in Weeks

Aircraft maker Boeing says commercial flights of the grounded 787 Dreamliner jets could resume within weeks. We are going to be dependent upon, as we move through the certification process, to determine when we actually get back in the air in terms o

发表于:2019-01-19 / 阅读(99) / 评论(0)

英闻天下

英语听力：自然百科穿越银河系的旅行 Through Milky Way—14

Its a stunning location, but its also mysterious. These stars are not just close together. They are on the move at enormous speeds. Going to the heart of a galaxy might not be the similar to going to an amusement park. The rides are some similar to h

发表于:2019-01-22 / 阅读(271) / 评论(0)

自然百科2011年

可以调焦的眼镜?

可以调焦的眼镜? They may look like an ordinary pair of spectacles, but these glasses are at the forefront of a revolution in eyewear. 它们看起来像普通的眼镜，但是是眼镜改革的最前沿。 Part of a new line of electronic eye

发表于:2019-02-07 / 阅读(135) / 评论(0)

实用英语

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(113) / 评论(0)

英语新闻

收购非洲最大铜矿中国长远布局钴供应

As China Molybdenum announced it was buying one of Africas largest copper mines earlier this month one thing was soon clear: the acquisition was about far more than the red metal. 随着洛阳钼业(China Molybdenum)本月早些时候宣布正在收购

发表于:2019-02-08 / 阅读(142) / 评论(0)

英语新闻

Russia resumes launch of Proton-M carrier rocket

MOSCOW, Sept. 21 (Xinhua) -- A Russian Proton-M carrier rocket carrying a military spacecraft blasted off early Wednesday from the Baikonur space center in Kazakhstan, the first launch since a series setbacks of Russian rocket launch in August. Colon

发表于:2019-02-09 / 阅读(134) / 评论(0)

英语新闻

Russia determines cause of failed satellite launch

MOSCOW, Aug. 30 (Xinhua) -- Russia's space agency said Tuesday that a Proton-M rocket launch failed earlier this month because of a malfunction in the upper stage. The conclusion was reached by an independent investigation commission following a seri

发表于:2019-02-11 / 阅读(124) / 评论(0)

英语新闻

你应不应该整夜给手机充电?

Chances are, you plug in your phone before you go to bed at night, thinking it's best to greet the morning with a fully charged device. 晚上临睡前，你可能会给手机充上电，想着第二天早上看到一部电量满格的手机。 Is th

发表于:2019-02-13 / 阅读(174) / 评论(0)

英语新闻

环球英语 — 132： Bipolar Disorder

Voice 1 Hello. Im Rachel Hobson. Voice 2 And Im Mike Procter. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 3 I was in the tent

发表于:2019-02-14 / 阅读(134) / 评论(0)

环球英语 Spotlight

Russia launches rocket with Chinese satellite

MOSCOW, Nov. 25 (Xinhua) -- Russia's Proton-M carrier rocket was launched on Friday from the Baikonur space center in Kazakhstan with a Chinese communications satellite AsiaSat-7, according to Russia's Federal Space Agency Roscosmos. Roscosmos' live

发表于:2019-02-18 / 阅读(140) / 评论(0)

英语新闻

夏说英语新闻晨读第464期:弯道超车中国领跑电动汽车

本期内容： Europe gave the world some of its top automakers, but it's losing out to China in the race to define the industry's future. China is the driving force in the business of electric vehicle batteries, which European leaders see as vital

发表于:2019-03-01 / 阅读(153) / 评论(0)

夏说英语新闻晨读

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学英语单词

both glabrous and curly pubescent plants

bresed