[化] 分子轨道图形

Questions for NASA after Rocket Explosion 火箭爆炸后美国国家航空航天局面临的问题 Unmanned Antares rocket is seen exploding seconds after lift off from a commercial launch pad in this still image from NASA video at Wallops Island, V

发表于:2018-12-08 / 阅读(129) / 评论(0) 分类 2014年VOA慢速英语(十)月

[00:00.00]Unit 8 My Toys [00:05.58]1.Listen.Point.Say. [00:19.62]What do you want? [00:23.18]I want the orange ball. [00:27.11]2.Listen.Say.Do the actions. [00:43.45]My toys are in my toy box.I take them out to play. [00:48.89]And when I've finished

发表于:2018-12-13 / 阅读(227) / 评论(0) 分类 新派英语第一册

Virgin Spaceship Crash Raises Questions 维珍宇宙飞船失事引发诸多问题 WASHINGTON Plans to fly tourists to the edge of space could be delayed after Friday's crash of Virgin Galactic's SpaceShipTwo during a manned test flight. It is the se

发表于:2018-12-16 / 阅读(104) / 评论(0) 分类 VOA标准英语2014年(十一月)

美国火箭爆炸,私营航天产业的挫折 Wednesday's successful launch of a Russian space vehicle taking supplies to the International Space Station was in sharp contrast to the explosion of a private U.S. cargo space craft shortly after it's

发表于:2018-12-19 / 阅读(126) / 评论(0) 分类 VOA双语新闻 2014年10月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Just when you thought youd heard everything, scientists have found that the reason you can hear everythingincluding things that are very quietis because

发表于:2018-12-24 / 阅读(136) / 评论(0) 分类 Scientific American(四)月

Galactic Rotation 银河系自转 Astronomers calculate there is ten times more matter in our Milky Way galaxy than we can actually see. Discover how the orbital motions of stars in the galaxy reveal dark matter -- on today's Earth and Sky. JB: I'm Joel

发表于:2019-01-02 / 阅读(274) / 评论(0) 分类 (科普英语)Earth and Sky

Graph Search的理念在于,以谷歌搜索引擎发掘互联网信息的方式,发掘Facebook网站社交图谱的含义。Graph Search扩展了Facebook的核心使命:不仅帮助用户与已知的他人建立联系,还能成为一款发现工

发表于:2019-01-05 / 阅读(162) / 评论(0) 分类 英语新闻视频

The 2009 Nobel Prize in Chemistry goes to Venkatraman Ramakrishnan of the MRC Laboratory of Molecular Biology in England, Yale Universitys Thomas Steitz, and Ada Yonath of the Weizmann Institute of Science in Israel for their studies of the ribosome.

发表于:2019-01-08 / 阅读(158) / 评论(0) 分类 Scientific American(十)月

美国私企飞船与空间站对接 WASHINGTON, Jan. 12 (Xinhua) -- A commercial spacecraft, operated by U.S. space company Orbital Sciences Corp., docked with the International Space Station (ISS) on Sunday morning on its first official cargo resup

发表于:2019-01-09 / 阅读(152) / 评论(0) 分类 英语新闻

SCIENCE IN THE NEWS - Space Junk Threatens Earths Orbital Environment JIM TEDDER: This is SCIENCE IN THE NEWS, in VOA Special English. Im Jim Tedder. KATHERINE COLE: And Im Katherine Cole. Today, we tell about an ever increasing number of objects in

发表于:2019-01-12 / 阅读(190) / 评论(0) 分类 2011年VOA慢速英语(九)月

Global Warming Could Delay Next Ice Age The next ice age could be delayed by tens of thousands of years due to excessive amounts of heat-trapping carbon dioxide in the atmosphere, which disrupts Earths natural cycle of warming and cooling, according

发表于:2019-01-13 / 阅读(149) / 评论(0) 分类 VOA标准英语2012年(一月)

It started with a simple experiment: take some graphite - the black stuff in the middle of a pencil - and put a piece of tape over it. When the scientists at the University of Manchester did that, they found that they could develop a material that co

发表于:2019-01-14 / 阅读(193) / 评论(0) 分类 VOA标准英语2010年(十)月

Graphene Called Amazing, Versatile Material of the Future 前景光明的多功能材料石墨烯 In 2004, two scientists at the University of Manchester in England isolated a carbon-based material called graphene, with some unusual properties. Andre

发表于:2019-01-14 / 阅读(170) / 评论(0) 分类 VOA标准英语2014年(二月)

With Failed Launch, US Private Space Industry Suffers Setback 火箭发射失败 美国私人航天受挫 Wednesday's successful launch of a Russian space vehicle taking supplies to the International Space Station was in sharp contrast to the explosi

发表于:2019-01-14 / 阅读(131) / 评论(0) 分类 VOA标准英语2014年(十月)

英语写作中的常用句型

发表于:2019-01-17 / 阅读(178) / 评论(0) 分类 英语学习方法

第一部分 常用于引言段的句型的2类表达方式 一、议论文常用句型 1. It is a fact that. 2. It is well-known that. 3. There is no doubt that. 4. I think that. 5. Contrary to the popular thought, I prefer. 6. Some people say/belie

发表于:2019-01-17 / 阅读(189) / 评论(0) 分类 实用英语

The amount of debris orbiting the Earth has reached a tipping point for collisions, which would in turn generate more of the debris that threatens astronauts and satellites, according to a US study released on Thursday。 NASA needs a new strategic p

发表于:2019-01-30 / 阅读(137) / 评论(0) 分类 实用英语

By David McAlary Washington 12 July 2006 Astronaut Mike Fossum (on arm)installs the International Space Station's railcar-like mobile transporter U.S. space shuttle astronauts are on their third spacewalk since Saturday, this time to practice method

发表于:2019-02-03 / 阅读(245) / 评论(0) 分类 2006年VOA标准英语(七月)

(一)段首句1. 关于人们有不同的观点。一些人认为There are different opinions among people as to ____ .Some people suggest that ____. 2. 俗话说(常言道),它是我们前辈的经历,但是,即使在今天,它在许多

发表于:2019-02-17 / 阅读(184) / 评论(0) 分类 四六级写作指导

(一)段首句1. 关于人们有不同的观点。一些人认为There are different opinions among people as to ____ .Some people suggest that ____. 2. 俗话说(常言道),它是我们前辈的经历,但是,即使在今天,它在许多场合仍

发表于:2019-02-17 / 阅读(126) / 评论(0) 分类 四六级写作指导
学英语单词
afeed
Andongho
anthaxia toyamai
antirolling fin
antuitrin-S
armandoes
bangtail musters
Bilshausen
binder gun
Birch Point
boiler water conditioning
brine guage
brown off
bubble over with
buying and selling of stocks
canned plain tomatoes
carriagemaking
carrions
cast tow
chaetodon melannotus
chemical corps
Christianizer
chuck wagon
closed-circuit grinder
compact COBOL
condensing rings
contact plant of sulfuric acid
converter plant
dashed off
DC converter
decimal candle
decorative cutting
Deltatheroides
diffused layer
Doriganj
dust proof switchgear
extractionflask
fallings
flag leaf sheath length
floating oil loading hose
forced-march
freight station
gilberts
gradient of neutrons
graphicrecording
hanas
hantzschia marina
hard-bittens
head scarf
heed
highly saturated
homoromanticism
housefraus
keratoscopes
kinomere
kupferglas (cuprite)
law of rectilinear diameter
mag wheel
Marondera
membrane responsiveness
microthrombus
net heat consumption
North Atlantic Treaty Organization Satellite Communications
oil pollution residues
orthoglycaemic
Otanthera
paired-associate
puzzle over
quantile process
radio tube performance chart
rappaports
repulsion exponent
rhinocerous
ring systems
sensuosities
sesban
set of coordinates
skaldic
sorbitose
speechmodulation
St-Jean-de-Sauves
stinky squids
Stokksnes
studentry
subcarrier band
tamits
terrasini
Texada I.
theft loss
thrombocytopenic purpuras
to amount to sth
Torx head
trisection
unclassified technical
undamaged tank
unrehabilitatable
uphill shaker
very-high speed computer
virglorian age
warm blooded animal
zol