[化] 半经验分子轨道法

A-B-C METHOD OF MANAGING ATTITUDES As an airport skycap checked through a customer at curbside, he accidentally knocked over the man's luggage. He quickly collected the fallen bags and apologized for the mishap. Unappeased, the traveler burst into a

发表于:2018-12-07 / 阅读(302) / 评论(0) 分类 每天一点英文

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(101) / 评论(0) 分类 2014年VOA慢速英语(十)月

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(75) / 评论(0) 分类 VOA标准英语2014年(十一月)

我上个月坐火车到纽约去看朋友,上车后刚要坐下,旁边座位上的女乘客就开始很大声的自言自语,看上去精神好像不太正常,吓得我只好在过道对面远远地坐下。 后来我注意到,每次有人要

发表于:2018-12-16 / 阅读(182) / 评论(0) 分类 美国习惯用语

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(96) / 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(111) / 评论(0) 分类 Scientific American(四)月

Books and Arts;New film 文艺;新片上映 Method in the madness 疯狂中的理智 A searching look at what caused the split between Freud and Jung 深度挖掘:弗洛伊德、荣格决裂的原因 Psychoanalysis, as practised by Carl Jung and

发表于:2018-12-31 / 阅读(192) / 评论(0) 分类 经济学人文艺系列

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(236) / 评论(0) 分类 (科普英语)Earth and Sky

Americans, Briton Win Nobel Chemistry Prize for Directed Evolution Two Americans and one Briton have won the 2018 Nobel Prize for Chemistry for developing new processes used to create drugs, chemicals and biofuels. Frances Arnold of the California In

发表于:2019-01-03 / 阅读(122) / 评论(0) 分类 2018年VOA慢速英语(十)月

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(133) / 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(123) / 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(155) / 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(122) / 评论(0) 分类 VOA标准英语2012年(一月)

A Step Closer to Major HIV Prevention Method A U.S. government panel has recommended the use of a once daily pill to help prevent HIV infection. The pill has been shown to be very effective in studies. The Food and Drug Administration, the FDA, now h

发表于:2019-01-13 / 阅读(151) / 评论(0) 分类 VOA标准英语2012年(五月)

SAF New Fire-Building Method Reduces Air Pollution With their megaphones and orange uniforms, these fieldworkers do not go unnoticed. This is Fine Town, a township south of Johannesburg. Every day, the fieldworkers walk around the townships to show t

发表于:2019-01-13 / 阅读(184) / 评论(0) 分类 VOA标准英语2012年(三月)

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(103) / 评论(0) 分类 VOA标准英语2014年(十月)

This years Nobel Prize in Chemistry is about the worlds smallest machines. G?ran Hansson, secretary general of the Royal Swedish Academy of Sciences, earlier this morning. The Royal Swedish Academy of Sciences has decided to award the 2016 Nobel Priz

发表于:2019-01-17 / 阅读(160) / 评论(0) 分类 2016年Scientific American(十)月

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(112) / 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(220) / 评论(0) 分类 2006年VOA标准英语(七月)

Traditional Teaching Method Do your teachers still use traditional techniques to teach you nowadays? A revol- ution in teaching techniques is required now. In the past, we just took it for granted that a teacher' s aim was to teach the students all t

发表于:2019-02-08 / 阅读(160) / 评论(0) 分类 英语作文
学英语单词
achimeness
anglians
arkyochrome cell
arroyo willow
astricts
audiospectrography
audit
bean curve
benzene sulfonyl anthranilic acid
blithely
bogenfahren
boron-nitrogen compound
brain rudiment
calcielase
Campden Process
carbinoxanine
CCAP
chloropeptide
circular magnetic chuck
class-c operation
composite numbers
cowponies
cut off attenuator
Cyrenaics
dalmar
dangos
data purging
decio
degarmo
deliquiating
division-violists
dust cloth
Dzüünharaa
editor card
electronic print marking
erecting crane for railway bridge span
extreme limit
felt like a million dollars
foam fractionation
foryou
fourth mate
furylcarbinol
grab traversal mechanism
half moon
Haplospondias
high vacuum jar
hoeth
home zones
hybrid equivalent impedance
hydrothermal deactivation
in-and-in
investing bone
kahlan
lalorrhea
lateral cervical sinus
Lesser Antillean
m. iliocostalis lumborum
magic away
methylvinyl
mounting card
multimedia terminal
narcotics(officer)
nearly men
neutron-lifetime
Noaillan
on my game
onset of fluidization
partial nominal value of a material measure
periodic trial balance
photoemissive cell
Pneumogynecography
Postischium
Prechristian
product relationship management
protheite
pulp resinifying agent
pushing towards
pyosalpinxes
Remove file
rerating
ricked
rohirrims
sample nozzle
sciurines
shock attenuation device
slanting leg manometer
special wagon
squat on
still-hunt
subjective synonym
suface grinding
surozes
symmetrical shunt-type thermoammeter
ten-points
toluenethiol
Treasury Direct
twice a day
twilighty
voights
waferboard
water buffalo gazing at moon
wharfs